Exact Mass: 248.1412

Exact Mass Matches: 248.1412

Found 500 metabolites which its exact mass value is equals to given mass value 248.1412, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

Parthenolide

(1aR,4E,7aS,10aS,10bS)-1a,5-Dimethyl-8-methylene-2,3,6,7,7a,8,10a,10b-octahydrooxireno[9,10]cyclodeca[1,2-b]furan-9(1aH)-one

C15H20O3 (248.1412)


D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents (1Ar,7aS,10aS,10bS)-1a,5-dimethyl-8-methylidene-2,3,6,7,7a,8,10a,10b-octahydrooxireno[9,10]cyclodeca[1,2-b]furan-9(1aH)-one is a germacranolide. Parthenolide has been used in trials studying the diagnostic of Allergic Contact Dermatitis. (1aR,7aS,10aS,10bS)-1a,5-dimethyl-8-methylidene-2,3,6,7,7a,8,10a,10b-octahydrooxireno[9,10]cyclodeca[1,2-b]furan-9(1aH)-one is a natural product found in Cyathocline purpurea, Tanacetum parthenium, and other organisms with data available. Parthenolide belongs to germacranolides and derivatives class of compounds. Those are sesquiterpene lactones with a structure based on the germacranolide skeleton, characterized by a gamma lactone fused to a 1,7-dimethylcyclodec-1-ene moiety. Thus, parthenolide is considered to be an isoprenoid lipid molecule. Parthenolide is practically insoluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). Parthenolide is a bitter tasting compound found in sweet bay, which makes parthenolide a potential biomarker for the consumption of this food product. Parthenolide is a sesquiterpene lactone of the germacranolide class which occurs naturally in the plant feverfew (Tanacetum parthenium), after which it is named. It is found in highest concentration in the flowers and fruit . relative retention time with respect to 9-anthracene Carboxylic Acid is 1.002 relative retention time with respect to 9-anthracene Carboxylic Acid is 1.000 Parthenolide is a sesquiterpene lactone found in the medicinal herb Feverfew. Parthenolide exhibits anti-inflammatory activity by inhibiting NF-κB activation; also inhibits HDAC1 protein without affecting other class I/II HDACs. Parthenolide is a sesquiterpene lactone found in the medicinal herb Feverfew. Parthenolide exhibits anti-inflammatory activity by inhibiting NF-κB activation; also inhibits HDAC1 protein without affecting other class I/II HDACs.

   

Mecheliolide

[3aS-(3aalpha,9alpha,9aalpha,9bbeta)]-3a,4,5,7,8,9,9a,9b-Octahydro-9-hydroxy-6,9-dimethyl-3-methylene-azuleno[4,5-b]furan-2(3H)-one

C15H20O3 (248.1412)


Micheliolide is a sesquiterpene lactone. Micheliolide is a natural product found in Costus and Magnolia champaca with data available. Micheliolide can attenuate high glucose-stimulated NF-κB activation, IκBα degradation, and the expression of MCP-1, TGF-β1, and FN in mouse mesangial cells. Micheliolide can attenuate high glucose-stimulated NF-κB activation, IκBα degradation, and the expression of MCP-1, TGF-β1, and FN in mouse mesangial cells.

   

codonolactone

[4aS-(4aalpha,8abeta,9abeta)]-4a,5,6,7,8,8a,9,9a-Octahydro-9a-hydroxy-3,8a-dimethyl-5-methylenenaphtho[2,3-b]furan-2(4H)-one

C15H20O3 (248.1412)


Atractylenolide III is a naphthofuran. It has a role as a metabolite. Atractylenolide III is a natural product found in Codonopsis canescens, Codonopsis subglobosa, and other organisms with data available. A natural product found in Atractylodes lancea. Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells. Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells.

   

Santamarin

NAPHTHO(1,2-B)FURAN-2(3H)-ONE, 3A,4,5,5A,6,7,9A,9B-OCTAHYDRO-6-HYDROXY-5A,9-DIMETHYL-3-METHYLENE-, (3AS-(3A.ALPHA.,5A.BETA.,6.BETA.,9A.ALPHA.,9B.BETA.))-

C15H20O3 (248.1412)


Santamarin, also known as (+)-santamarine or balchanin, belongs to eudesmanolides, secoeudesmanolides, and derivatives class of compounds. Those are terpenoids with a structure based on the eudesmanolide (a 3,5a,9-trimethyl-naphtho[1,2-b]furan-2-one derivative) or secoeudesmanolide (a 3,6-dimethyl-5-(pentan-2-yl)-1-benzofuran-2-one derivative) skeleton. Santamarin is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Santamarin can be found in sweet bay, which makes santamarin a potential biomarker for the consumption of this food product. Santamarin is a sesquiterpene lactone of the eudesmanolide group. Santamarine is a natural product found in Centaurea uniflora, Eupatorium capillifolium, and other organisms with data available.

   

Tomentosin

2H-Cyclohepta(b)furan-2-one, 3,3a,4,7,8,8a-hexahydro-7-methyl-3-methylene-6-(3-oxobutyl)-, (3aR,7S,8aR)-

C15H20O3 (248.1412)


Tomentosin is a sesquiterpene lactone. Tomentosin is a natural product found in Apalochlamys spectabilis, Leucophyta brownii, and other organisms with data available.

   

Confertin

Anhydrocumanin

C15H20O3 (248.1412)


A natural product found in Inula hupehensis. A pseudoguaianolide that is decahydroazuleno[6,5-b]furan-2(3H)-one substituted by an oxo group at position 5, methyl groups at positions 4a and 8 and a methylidene group at position 3. It has been isolated from the aerial parts of Inula hupehensis.

   

NSC240610

1,2-Dihydro-alpha-santonin

C15H20O3 (248.1412)


   

Artabsin

6-hydroxy-3,6,9-trimethyl-2H,3H,3aH,4H,5H,6H,8H,9bH-azuleno[4,5-b]furan-2-one

C15H20O3 (248.1412)


Constituent of Artemisia absinthium (wormwood). Artabsin is found in alcoholic beverages and herbs and spices. Artabsin is found in alcoholic beverages. Artabsin is a constituent of Artemisia absinthium (wormwood).

   

Artemorin

(3aS,7R,11aR)-7-hydroxy-10-methyl-3,6-dimethylidene-2H,3H,3aH,4H,5H,6H,7H,8H,9H,11aH-cyclodeca[b]furan-2-one

C15H20O3 (248.1412)


Artemorin is a member of the class of compounds known as terpene lactones. Terpene lactones are prenol lipids containing a lactone ring. Artemorin is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Artemorin is a bitter tasting compound found in sweet bay, which makes artemorin a potential biomarker for the consumption of this food product.

   

Damsin

Azuleno[4,5-b]furan-2,9-dione,decahydro-6,9a-dimethyl-3-methylene-, (3aS,6S,6aS,9aR,9bR)-

C15H20O3 (248.1412)


   

Eupatolide

Eupatolide

C15H20O3 (248.1412)


A germacranolide with formula C15H20O3, isolated from several Inula species. It exhibits anti-cancer properties.

   

Ivalin

[3aR-(3aalpha,4aalpha,7alpha,8abeta,9aalpha)]-Decahydro-7-hydroxy-8a-methyl-3,5-bis(methylene)-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Pseudoivalin

[3aR-(3aalpha,4aalpha,5alpha,9abeta)]-3a,4,4a,5,6,7,9,9a-Octahydro-5-hydroxy-5,8-dimethyl-3-methylene-azuleno[6,5-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Tamaulipin A

[3aS-(3aR*,6Z,8R*,10Z,11aS*)]-3a,4,5,8,9,11a-Hexahydro-8-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Canellal

CANELLA WINTERANA

C15H20O3 (248.1412)


   

BOHLMANN K3089

BOHLMANN K3089

C15H20O3 (248.1412)


   

Illudin M

(-)-1alpha,7beta-dihydroxy-2,9-illudadien-8-one

C15H20O3 (248.1412)


   
   

(+)-cis-abscisic aldehyde

(2Z,4E)-5-[(1S)-1-hydroxy-2,6,6-trimethyl-4-oxocyclohex-2-en-1-yl]-3-methylpenta-2,4-dienal

C15H20O3 (248.1412)


(+)-cis-abscisic aldehyde is a member of the class of compounds known as sesquiterpenoids. Sesquiterpenoids are terpenes with three consecutive isoprene units. Thus, (+)-cis-abscisic aldehyde is considered to be an isoprenoid lipid molecule (+)-cis-abscisic aldehyde is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). (+)-cis-abscisic aldehyde can be found in a number of food items such as american cranberry, wild leek, lotus, and yautia, which makes (+)-cis-abscisic aldehyde a potential biomarker for the consumption of these food products.

   

1-Deoxy-11-oxopentalenate

(2S,5R,8S)-2,10,10-trimethyl-3-oxotricyclo[6.3.0.01,5]undec-6-ene-6-carboxylic acid

C15H20O3 (248.1412)


   

2alpha-Hydroxyalantolactone

7-hydroxy-5,8a-dimethyl-3-methylidene-2H,3H,3aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-2-one

C15H20O3 (248.1412)


2alpha-Hydroxyalantolactone is found in herbs and spices. 2alpha-Hydroxyalantolactone is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). 2alpha-Hydroxyalantolactone is found in herbs and spices.

   

Glechomafuran

5,10,15-trimethyl-4,9,13-trioxatetracyclo[10.3.0.0³,⁵.0⁸,¹⁰]pentadeca-1(12),14-diene

C15H20O3 (248.1412)


Constituent of spinach leaves (Spinacia oleracea). Mono-trans-p-coumaroylmesotartaric acid is found in green vegetables and spinach. Glechomafuran is found in green vegetables. Glechomafuran is a constituent of Smyrnium olusatrum (alexanders).

   

(S)-Pterosin A

S-2,3-Dihydro-6-(2-hydroxyethyl)-2-(hydroxymethyl)-2,5,7-trimethyl-1H-inden-1-one

C15H20O3 (248.1412)


(S)-Pterosin A is found in green vegetables. (S)-Pterosin A is a constituent of Pteridium aquilinum (bracken fern)

   

4-Epiisoinuviscolide

5-hydroxy-5,8-dimethyl-3-methylidene-2H,3H,3aH,4H,4aH,5H,6H,7H,7aH,9aH-azuleno[6,5-b]furan-2-one

C15H20O3 (248.1412)


4-Epiisoinuviscolide is found in herbs and spices. 4-Epiisoinuviscolide is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). 4-Epiisoinuviscolide is found in herbs and spices.

   

Desacetyllaurenobiolide

4-hydroxy-6,10-dimethyl-3-methylidene-2H,3H,3aH,4H,7H,8H,11H,11aH-cyclodeca[b]furan-2-one

C15H20O3 (248.1412)


Desacetyllaurenobiolide is found in herbs and spices. Desacetyllaurenobiolide is a constituent of Artemisia species. Constituent of Artemisia subspecies Desacetyllaurenobiolide is found in sweet bay and herbs and spices.

   

Marasmen-3-one

5,5-dimethyl-11,13-dioxatetracyclo[7.5.1.0¹,⁶.0¹²,¹⁵]pentadec-8-en-4-one

C15H20O3 (248.1412)


Marasmen-3-one is found in mushrooms. Marasmen-3-one is a metabolite of Marasmius oreades (fairy ring mushroom Metabolite of Marasmius oreades (fairy ring mushroom). Marasmen-3-one is found in mushrooms.

   

1alpha-1-Hydroxy-2,4(18),11(13)-eudesmatrien-12-oic acid

2-(5-hydroxy-4a-methyl-8-methylidene-1,2,3,4,4a,5,8,8a-octahydronaphthalen-2-yl)prop-2-enoic acid

C15H20O3 (248.1412)


1alpha-1-Hydroxy-2,4(18),11(13)-eudesmatrien-12-oic acid is a constituent of Artemisia vulgaris (mugwort). Constituent of Artemisia vulgaris (mugwort)

   

(1beta,4E,8beta,10alpha)-1,10-Epoxy-4,11(13)-germacradien-12,8-olide

(8Z)-3,8-dimethyl-12-methylidene-4,14-dioxatricyclo[9.3.0.0³,⁵]tetradec-8-en-13-one

C15H20O3 (248.1412)


(1beta,4E,8beta,10alpha)-1,10-Epoxy-4,11(13)-germacradien-12,8-olide is found in herbs and spices. (1beta,4E,8beta,10alpha)-1,10-Epoxy-4,11(13)-germacradien-12,8-olide is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). (1beta,4E,8beta,10alpha)-1,10-Epoxy-4,11(13)-germacradien-12,8-olide is found in herbs and spices.

   

(S)-Pterosin D

3-hydroxy-6-(2-hydroxyethyl)-2,2,5,7-tetramethyl-2,3-dihydro-1H-inden-1-one

C15H20O3 (248.1412)


Isolated from Pteridium aquilinum (bracken fern). (R)-Pterosin D is found in green vegetables and root vegetables. (R)-Pterosin D is found in green vegetables. (R)-Pterosin D is isolated from Pteridium aquilinum (bracken fern).

   

4,5-Epoxy-11(13)-guaien-12,8-olide

9,13-dimethyl-4-methylidene-6,14-dioxatetracyclo[8.4.0.0¹,¹³.0³,⁷]tetradecan-5-one

C15H20O3 (248.1412)


4,5-Epoxy-11(13)-guaien-12,8-olide is found in herbs and spices. 4,5-Epoxy-11(13)-guaien-12,8-olide is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). 4,5-Epoxy-11(13)-guaien-12,8-olide is found in herbs and spices.

   

Pseudoisoeugenol 2-methylbutanoate

4-methoxy-2-[(1E)-prop-1-en-1-yl]phenyl 2-methylbutanoate

C15H20O3 (248.1412)


Pseudoisoeugenol 2-methylbutanoate is found in anise. Pseudoisoeugenol 2-methylbutanoate is a constituent of Pimpinella anisum (aniseed) Constituent of Pimpinella anisum (aniseed). Pseudoisoeugenol 2-methylbutanoate is found in fats and oils, herbs and spices, and anise.

   

Cichoralexin

3,6,9-trimethyl-2H,3H,3aH,4H,5H,6H,6aH,7H,9aH,9bH-azuleno[4,5-b]furan-2,7-dione

C15H20O3 (248.1412)


Constituent of Cichorium intybus (chicory) inoculated with Pseudomonas cichorii. Cichoralexin is found in chicory, herbs and spices, and green vegetables. Cichoralexin is found in chicory. Cichoralexin is a constituent of Cichorium intybus (chicory) inoculated with Pseudomonas cichorii.

   

2,12-Epoxy-7(14)-illudadiene-3,8-diol

2,8-dimethyl-4-methylidene-10-oxaspiro[cyclopropane-1,3-tricyclo[6.2.1.0¹,⁶]undecan]-6-ene-2,5-diol

C15H20O3 (248.1412)


2,12-Epoxy-7(14)-illudadiene-3,8-diol is found in mushrooms. 2,12-Epoxy-7(14)-illudadiene-3,8-diol is a metabolite of Agrocybe aegerita.

   

1beta-Hydroxyalantolactone

[3aR-(3aalpha,5beta,8beta,8abeta,9aalpha)]-3a,5,6,7,8,8a,9,9a-Octahydro-8-hydroxy-5,8a-dimethyl-3-methylenenaphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


1beta-Hydroxyalantolactone is found in herbs and spices. 1beta-Hydroxyalantolactone is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). 1beta-Hydroxyalantolactone is found in herbs and spices. 1beta-Hydroxyalantolactone modulate many processes that influence inflammatory reactions[1]. 1beta-Hydroxyalantolactone modulate many processes that influence inflammatory reactions[1].

   

Istanbulin B

3,4a,5-trimethyl-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-2,8-dione

C15H20O3 (248.1412)


Istanbulin B is found in green vegetables. Istanbulin B is a constituent of Smyrnium olusatrum (alexanders) Constituent of Smyrnium olusatrum (alexanders). Istanbulin B is found in green vegetables.

   

Heliannuol C

5-ethenyl-2,2,8-trimethyl-2,3,4,5-tetrahydro-1-benzoxepine-3,7-diol

C15H20O3 (248.1412)


Heliannuol C is found in fats and oils. Heliannuol C is a constituent of Helianthus annuus (sunflower) Constituent of Helianthus annuus (sunflower). Heliannuol C is found in sunflower and fats and oils.

   

8-Epiisoivangustin

8-hydroxy-5,8a-dimethyl-3-methylidene-2H,3H,3aH,4H,4aH,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-2-one

C15H20O3 (248.1412)


8-Epiisoivangustin is found in herbs and spices. 8-Epiisoivangustin is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). 8-Epiisoivangustin is found in herbs and spices.

   

Heliannuol B

2-(2-hydroxypropan-2-yl)-5,8-dimethyl-2,5-dihydro-1-benzoxepin-7-ol

C15H20O3 (248.1412)


Heliannuol B is found in fats and oils. Heliannuol B is a constituent of Helianthus annuus (sunflower) Constituent of Helianthus annuus (sunflower). Heliannuol B is found in fats and oils.

   

Enokipodin A

1,5,12,12-Tetramethyl-8-oxatricyclo[7.2.1.02,7]dodeca-2(7),3,5-triene-4,9-diol

C15H20O3 (248.1412)


Enokipodin A is found in mushrooms. Enokipodin A is a constituent of Flammulina velutipes (velvet shank) Constituent of Flammulina velutipes (velvet shank). Enokipodin A is found in mushrooms.

   

Heliannuol E

4-ethenyl-2-(2-hydroxypropan-2-yl)-7-methyl-3,4-dihydro-2H-1-benzopyran-6-ol

C15H20O3 (248.1412)


Heliannuol E is found in fats and oils. Heliannuol E is a constituent of Helianthus annuus (sunflower). Constituent of Helianthus annuus (sunflower). Heliannuol E is found in sunflower and fats and oils.

   

Annuolide E

5-hydroxy-3-methyl-6,9-dimethylidene-octahydro-3H-azuleno[4,5-b]furan-2-one

C15H20O3 (248.1412)


Annuolide D is found in fats and oils. Annuolide D is a constituent of Helianthus annuus (sunflower). Constituent of Helianthus annuus (sunflower). Annuolide D is found in fats and oils.

   

(1(10)E,4beta,5alpha,8beta)-4,5-Epoxy-1(10),11(13)-germacradien-12,8-olide

(8Z)-5,9-dimethyl-14-methylidene-4,12-dioxatricyclo[9.3.0.0³,⁵]tetradec-8-en-13-one

C15H20O3 (248.1412)


(1(10)E,4beta,5alpha,8beta)-4,5-Epoxy-1(10),11(13)-germacradien-12,8-olide is found in herbs and spices. (1(10)E,4beta,5alpha,8beta)-4,5-Epoxy-1(10),11(13)-germacradien-12,8-olide is a constituent of Inula helenium (elecampane) Constituent of Inula helenium (elecampane). (1(10)E,4beta,5alpha,8beta)-4,5-Epoxy-1(10),11(13)-germacradien-12,8-olide is found in herbs and spices.

   

Glandulone C

(2E)-6-(6-hydroxy-4-methyl-3-oxocyclohexa-1,4-dien-1-yl)-2-methylhept-2-enal

C15H20O3 (248.1412)


Glandulone C is found in fats and oils. Glandulone C is a constituent of Helianthus annuus (sunflower). Constituent of Helianthus annuus (sunflower). Glandulone C is found in fats and oils.

   

Illudin C2

4-hydroxy-2-(hydroxymethyl)-2,4-dimethyl-6-methylidene-1,2,3,4,6,7-hexahydrospiro[cyclopropane-1,5-indene]-7-one

C15H20O3 (248.1412)


Illudin C3 is produced by Coprinus atramentarius (common ink cup Production by Coprinus atramentarius (common ink cup).

   

Eugenyl isovalerate

2-Methoxy-4-(prop-2-en-1-yl)phenyl 3-methylbutanoic acid

C15H20O3 (248.1412)


Eugenyl isovalerate is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]"). It is used as a food additive .

   

Annuolide B

9-(hydroxymethyl)-3-methyl-6-methylidene-2H,3H,3aH,4H,5H,6H,6aH,7H,9aH,9bH-azuleno[4,5-b]furan-2-one

C15H20O3 (248.1412)


Annuolide B is found in fats and oils. Annuolide B is a constituent of Helianthus annuus (sunflower). Constituent of Helianthus annuus (sunflower). Annuolide B is found in fats and oils.

   

(-)-Parthenolide

4,8-dimethyl-12-methylidene-3,14-dioxatricyclo[9.3.0.0^{2,4}]tetradec-7-en-13-one

C15H20O3 (248.1412)


   

Deoxycholylmethionine

2-[(4-{5,16-dihydroxy-2,15-dimethyltetracyclo[8.7.0.0,.0,]heptadecan-14-yl}-1-hydroxypentylidene)amino]-4-(methylsulphanyl)butanoic acid

C15H20O3 (248.1412)


Deoxycholylmethionine belongs to a class of molecules known as bile acid-amino acid conjugates. These are bile acid conjugates that consist of a primary bile acid such as cholic acid, doxycholic acid and chenodeoxycholic acid, conjugated to an amino acid. Deoxycholylmethionine consists of the bile acid deoxycholic acid conjugated to the amino acid Methionine conjugated at the C24 acyl site.Bile acids play an important role in regulating various physiological systems, such as fat digestion, cholesterol metabolism, vitamin absorption, liver function, and enterohepatic circulation through their combined signaling, detergent, and antimicrobial mechanisms (PMID: 34127070). Bile acids also act as detergents in the gut and support the absorption of fats through the intestinal membrane. These same properties allow for the disruption of bacterial membranes, thereby allowing them to serve a bacteriocidal or bacteriostatic function. In humans (and other mammals) bile acids are normally conjugated with the amino acids glycine and taurine by the liver. This conjugation catalyzed by two liver enzymes, bile acid CoA ligase (BAL) and bile acid CoA: amino acid N-acyltransferase (BAT). Glycine and taurine bound BAs are also referred to as bile salts due to their decreased pKa and complete ionization resulting in these compounds being present as anions in vivo. Unlike glycine and taurine-conjugated bile acids, these recently discovered bile acids, such as Deoxycholylmethionine, are produced by the gut microbiota, making them secondary bile acids (PMID: 32103176) or microbially conjugated bile acids (MCBAs) (PMID: 34127070). Evidence suggests that these bile acid-amino acid conjugates are produced by microbes belonging to Clostridia species (PMID: 32103176). These unusual bile acid-amino acid conjugates are found in higher frequency in patients with inflammatory bowel disease (IBD), cystic fibrosis (CF) and in infants (PMID: 32103176). Deoxycholylmethionine appears to act as an agonist for the farnesoid X receptor (FXR) and it can also lead to reduced expression of bile acid synthesis genes (PMID: 32103176). It currently appears that microbially conjugated bile acids (MCBAs) or amino acid-bile acid conjugates are only conjugated to cholic acid, deoxycholic acid and chenodeoxycholic acid (PMID: 34127070). It has been estimated that if microbial conjugation of bile acids is very promiscuous and occurs for all potential oxidized, epimerized, and dehydroxylated states of each hydroxyl group present on cholic acid (C3, C7, C12) in addition to ring orientation, the total number of potential human bile acid conjugates could be over 2800 (PMID: 34127070).

   

2,5,9-Trimethyl-11-oxotricyclo[6.3.0.01,5]undec-3-ene-3-carboxylic acid

2,5,9-trimethyl-11-oxotricyclo[6.3.0.0¹,⁵]undec-3-ene-3-carboxylic acid

C15H20O3 (248.1412)


   

Isoamyl 4-methoxycinnamate

3-methylbutyl 3-(4-methoxyphenyl)prop-2-enoate

C15H20O3 (248.1412)


   

Arteannuin B

8,12-dimethyl-4-methylidene-2,13-dioxatetracyclo[7.5.0.0¹,⁵.0¹²,¹⁴]tetradecan-3-one

C15H20O3 (248.1412)


   

Atractylenolide III

9a-hydroxy-3,8a-dimethyl-5-methylidene-2H,4H,4aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-2-one

C15H20O3 (248.1412)


   

Micheliolide

9-hydroxy-6,9-dimethyl-3-methylidene-2H,3H,3aH,4H,5H,7H,8H,9H,9aH,9bH-azuleno[4,5-b]furan-2-one

C15H20O3 (248.1412)


   

Parthenium

7-methyl-3-methylidene-6-(3-oxobutyl)-2H,3H,3aH,4H,7H,8H,8aH-cyclohepta[b]furan-2-one

C15H20O3 (248.1412)


   

Perezone

3-hydroxy-5-methyl-2-(6-methylhept-5-en-2-yl)cyclohexa-2,5-diene-1,4-dione

C15H20O3 (248.1412)


   

Taurin

3,5a,9-trimethyl-2H,3H,3aH,4H,5H,5aH,6H,7H,8H,9bH-naphtho[1,2-b]furan-2,6-dione

C15H20O3 (248.1412)


   

[4]-Shogaol

(4E)-1-(4-hydroxy-3-methoxyphenyl)oct-4-en-3-one

C15H20O3 (248.1412)


[4]-shogaol is a member of the class of compounds known as shogaols. Shogaols are ginger derivatives containing a shogaol moiety, which consists of a benzene ring bearing a dec-4-en-3-one moiety, a methoxyphenyl group, a hydroxyl group and at positions 1, 3, and 4, respectively. [4]-shogaol is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). [4]-shogaol can be found in ginger, which makes [4]-shogaol a potential biomarker for the consumption of this food product.

   

Reynosin

6-hydroxy-5a-methyl-3,9-dimethylidene-dodecahydronaphtho[1,2-b]furan-2-one

C15H20O3 (248.1412)


Reynosin belongs to eudesmanolides, secoeudesmanolides, and derivatives class of compounds. Those are terpenoids with a structure based on the eudesmanolide (a 3,5a,9-trimethyl-naphtho[1,2-b]furan-2-one derivative) or secoeudesmanolide (a 3,6-dimethyl-5-(pentan-2-yl)-1-benzofuran-2-one derivative) skeleton. Reynosin is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Reynosin can be found in sweet bay, which makes reynosin a potential biomarker for the consumption of this food product.

   

Anthecotulide

4-[(2E)-3,7-dimethyl-5-oxoocta-2,6-dien-1-yl]-3-methylideneoxolan-2-one

C15H20O3 (248.1412)


Anthecotulide is a member of the class of compounds known as terpene lactones. Terpene lactones are prenol lipids containing a lactone ring. Anthecotulide is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Anthecotulide can be found in german camomile, which makes anthecotulide a potential biomarker for the consumption of this food product.

   

Cichoriolide A

8-hydroxy-5a,9-dimethyl-3-methylidene-2H,3H,3aH,4H,5H,5aH,6H,7H,8H,9bH-naphtho[1,2-b]furan-2-one

C15H20O3 (248.1412)


Cichoriolide a belongs to eudesmanolides, secoeudesmanolides, and derivatives class of compounds. Those are terpenoids with a structure based on the eudesmanolide (a 3,5a,9-trimethyl-naphtho[1,2-b]furan-2-one derivative) or secoeudesmanolide (a 3,6-dimethyl-5-(pentan-2-yl)-1-benzofuran-2-one derivative) skeleton. Cichoriolide a is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Cichoriolide a can be found in chicory, which makes cichoriolide a a potential biomarker for the consumption of this food product.

   

Arteannuin

3H-Oxireno(7,8)naphtho(8a,1-b)furan-3-one, decahydro-7,9a-dimethyl-4-methylene-, (1aR-(1aalpha,1bR*,4abeta,7beta,7abeta,9aalpha))-

C15H20O3 (248.1412)


Arteannuin B is a natural product found in Artemisia apiacea, Artemisia annua, and Artemisia carvifolia with data available. Arteannuin B co-occurs with artemisinin, which is the potent antimalarial principle of the Chinese medicinal herb Artemisia annua (Asteraceae)[1]. Arteannuin B shows anti-SARS-CoV-2 potential with an EC50 of 10.28 μM[2]. Arteannuin B co-occurs with artemisinin, which is the potent antimalarial principle of the Chinese medicinal herb Artemisia annua (Asteraceae)[1]. Arteannuin B shows anti-SARS-CoV-2 potential with an EC50 of 10.28 μM[2].

   

Carabron

(3aR,4aS,5S,5aR,6aR)-5a-methyl-3-methylidene-5-(3-oxobutyl)-3a,4,4a,5,6,6a-hexahydrocyclopropa[f][1]benzofuran-2-one

C15H20O3 (248.1412)


Carabrone is a natural product found in Syncretocarpus sericeus, Carpesium abrotanoides, and other organisms with data available.

   

Ligustilone

4(2H)-Benzofuranone, 3,3a,7,7a-tetrahydro-3-hydroxy-3,6-dimethyl-2-(3-methyl-2-butenylidene)- (2Z,3alpha,3a beta,7a beta)-(+)-

C15H20O3 (248.1412)


Bisabolangelone is a natural product found in Ostericum grosseserratum, Angelica pubescens, and Angelica biserrata with data available. Bisabolangelone, a sesquiterpene derivative, is isolated from the roots of Osterici Radix. Bisabolangelone possesses anti-inflammatory properties, which inhibits LPS-stimulated inflammation through the blocking of NF-kappaB and MAPK pathways in macrophages. Bisabolangelone has anti-ulcer activities[1][2]. Bisabolangelone, a sesquiterpene derivative, is isolated from the roots of Osterici Radix. Bisabolangelone possesses anti-inflammatory properties, which inhibits LPS-stimulated inflammation through the blocking of NF-kappaB and MAPK pathways in macrophages. Bisabolangelone has anti-ulcer activities[1][2].

   
   

Douglanin

[3aS-(3aalpha,5abeta,6alpha,9aalpha,9bbeta)]-3a,4,5,5a,6,7,9a,9b-Octahydro-6-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

SESQUITERPENE LACTONE TS-7

SESQUITERPENE LACTONE TS-7

C15H20O3 (248.1412)


   

Pechueloic acid

Pechueloic acid

C15H20O3 (248.1412)


Rupestonic acid, a sesquiterpene, can inhibit influenza virus[1].

   

7alpha-Hydroxyfrullanolide

[3aR-(3aalpha,5abeta,9balpha)]-3a,4,5,5a,6,7,8,9b-Octahydro-3a-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Hypnophilin

Hypnophilin

C15H20O3 (248.1412)


[Raw Data] CBA38_Hypnophilin_pos_40eV_1-3_01_1725.txt [Raw Data] CBA38_Hypnophilin_pos_30eV_1-3_01_1724.txt [Raw Data] CBA38_Hypnophilin_pos_20eV_1-3_01_1723.txt [Raw Data] CBA38_Hypnophilin_pos_10eV_1-3_01_1714.txt

   

(-)-Helenium lactone

(-)-Helenium lactone

C15H20O3 (248.1412)


   

9alpha-Hydroxyasterolide

9alpha-Hydroxyasterolide

C15H20O3 (248.1412)


   

Mairetolide A

Mairetolide A

C15H20O3 (248.1412)


   

Taurin

[3S-(3alpha,3aalpha,5abeta,9bbeta)]-3a,5,5a,7,8,9b-Hexahydro-3,5a,9-trimethylnaphtho[1,2-b]furan-2,6(3H,4H)-dione

C15H20O3 (248.1412)


   

Pinguisanolide

Pinguisanolide

C15H20O3 (248.1412)


   

(+)-Bisabolangelone

(+)-Bisabolangelone

C15H20O3 (248.1412)


   

Merulactone

Merulactone

C15H20O3 (248.1412)


   

[3aS-(3aR*,5E,7R*,10E,11aR*)]-3a,4,7,8,9,11a-Hexahydro-7-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

[3aS-(3aR*,5E,7R*,10E,11aR*)]-3a,4,7,8,9,11a-Hexahydro-7-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Gloeophyllone

Gloeophyllone

C15H20O3 (248.1412)


   

4,8-Dipiinuviscolide

4,8-Dipiinuviscolide

C15H20O3 (248.1412)


   

15-Hydroxyisoalloalantolactone

[3aR-(3aalpha,4aalpha,8abeta,9aalpha)]-3a,4,4a,7,8,8a,9,9a-Octahydro-5-(hydroxymethyl)-8a-methyl-3-methylenenaphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

3,4-Epoxy-5,10-epi-elemasteriractinolide

3,4-Epoxy-5,10-epi-elemasteriractinolide

C15H20O3 (248.1412)


   

SCHEMBL10307297

SCHEMBL10307297

C15H20O3 (248.1412)


   

Soulangianolide A

Soulangianolide A

C15H20O3 (248.1412)


   

(-)-Heliangolide

(-)-Heliangolide

C15H20O3 (248.1412)


   

Telekin

[3aR-(3aalpha,4aalpha,8abeta,9aalpha)]-Decahydro-4a-hydroxy-8a-methyl-3,5-bis(methylene)-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


Telekin is a sesquiterpene lactone. Telekin is a natural product found in Calea jamaicensis, Carpesium abrotanoides, and other organisms with data available.

   

14-Hydroxy-desoxyivangustin

14-Hydroxy-desoxyivangustin

C15H20O3 (248.1412)


   

1,6-Dimethyl-4-isopropyl-7-hydroxytetralin-5,8-dione

1,6-Dimethyl-4-isopropyl-7-hydroxytetralin-5,8-dione

C15H20O3 (248.1412)


   

Arbusculin C

[3aS-(3aalpha,5abeta,9aalpha,9bbeta)]-Decahydro-9a-hydroxy-5a-methyl-3,9-bis(methylene)naphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

[3aR-(3aalpha,5alpha,7aalpha,8alpha,9abeta)]-3a,5,6,7,7a,8,9,9a-Octahydro-5-hydroxy-5,8-dimethyl-3-methylene-azuleno[6,5-b]furan-2(3H)-one

[3aR-(3aalpha,5alpha,7aalpha,8alpha,9abeta)]-3a,5,6,7,7a,8,9,9a-Octahydro-5-hydroxy-5,8-dimethyl-3-methylene-azuleno[6,5-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Cumambranolide

Cumambranolide

C15H20O3 (248.1412)


   

2alpha-Hydroxysphaerantholide

[3aS-(3aalpha,5abeta,7alpha,9balpha)]-3a,4,5,5a,6,7,8,9b-Octahydro-7-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Hypochaerin

Hypochaerin

C15H20O3 (248.1412)


   

7,10-Dihydroxydehydrodihydrobotrydial

7,10-Dihydroxydehydrodihydrobotrydial

C15H20O3 (248.1412)


   

1,1,5-Trimethyl-2-formyl-4-(3-methyl-2-butenoyloxy)-2,5-cyclohexadiene

1,1,5-Trimethyl-2-formyl-4-(3-methyl-2-butenoyloxy)-2,5-cyclohexadiene

C15H20O3 (248.1412)


   

Isoquadrone

Isoquadrone

C15H20O3 (248.1412)


   

8beta-Hydroxy-4(15),9-guaiadien-12,6alpha-olide

8beta-Hydroxy-4(15),9-guaiadien-12,6alpha-olide

C15H20O3 (248.1412)


   

[3S-(3alpha,3aalpha,6alpha,6aalpha,9aalpha,9bbeta)]-Decahydro-3-methyl-9-methylene-spiro[azuleno[4,5-b]furan-6(2H),2-oxiran]-2-one

[3S-(3alpha,3aalpha,6alpha,6aalpha,9aalpha,9bbeta)]-Decahydro-3-methyl-9-methylene-spiro[azuleno[4,5-b]furan-6(2H),2-oxiran]-2-one

C15H20O3 (248.1412)


   
   

8-epi-Ivangustin

8-epi-Ivangustin

C15H20O3 (248.1412)


   

11beta,13-Dihydrozaluzanin C

11beta,13-Dihydrozaluzanin C

C15H20O3 (248.1412)


   

(+)-Isotelekin

(+)-Isotelekin

C15H20O3 (248.1412)


   

Brigalow ketol, TMS

Brigalow ketol, TMS

C15H20O3 (248.1412)


   

Carabrone

NCGC00385841-01_C15H20O3_2H-Cyclopropa[f]benzofuran-2-one, octahydro-5a-methyl-3-methylene-5-(3-oxobutyl)-, (3aR,4aS,5S,5aR,6aR)-

C15H20O3 (248.1412)


   

Carpesialactone

Carpesialactone

C15H20O3 (248.1412)


   

15-Hydroxyelemasteriactinolide

15-Hydroxyelemasteriactinolide

C15H20O3 (248.1412)


   
   

Shizukolidol

[4aR-(4aalpha,5alpha,8abeta)]-4a,5,6,7,8,8a-Hexahydro-5-hydroxy-3,5,8a-trimethylnaphtho[2,3-b]furan-2(4H)-one

C15H20O3 (248.1412)


   

1-Oxo-4(15),11(13)-eudesmadien-12-oic acid

[2R-(2alpha,4aalpha,8abeta)]-Decahydro-4a-methyl-a,8-bis(methylene)-5-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

CRM 51005

(E)-3-Ethyl-2,4-dihydroxy-6-(1-methyl-1-pentenyl)-benzaldehyde

C15H20O3 (248.1412)


   

3alpha,4alpha-Epoxy-11betaH-guaia-10(14)-en-6alpha,12-olide

3alpha,4alpha-Epoxy-11betaH-guaia-10(14)-en-6alpha,12-olide

C15H20O3 (248.1412)


   

Maroniolide

Maroniolide

C15H20O3 (248.1412)


   

3beta-Hydroxyxanthanodiene

[3aR-(3aalpha,4abeta,5beta,6beta,9aalpha)]-3a,4,4a,5,6,7,9,9a-octahydro-6-hydroxy-4a,5-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

4beta,14-Dihydrozaluzanin C

4beta,14-Dihydrozaluzanin C

C15H20O3 (248.1412)


   

9beta-Hydroxy costunolide

9beta-Hydroxy costunolide

C15H20O3 (248.1412)


   

Perezone

(R)-2-(1,5-Dimethyl-4-hexenyl)-3-hydroxy-5-methyl-2,5-cyclohexadiene-1,4-dione

C15H20O3 (248.1412)


   

Dendocarbin H

Dendocarbin H

C15H20O3 (248.1412)


   

5alpha-Hydroxy-3,4-dihydroachalensolide

5alpha-Hydroxy-3,4-dihydroachalensolide

C15H20O3 (248.1412)


   

3-Hydroxy-4,6,6-trimethyl-1,4-Cyclohexadiene-1-carboxaldehyde 2-methylcrotonate

3-Hydroxy-4,6,6-trimethyl-1,4-Cyclohexadiene-1-carboxaldehyde 2-methylcrotonate

C15H20O3 (248.1412)


   

Trifloculoside

Trifloculoside

C15H20O3 (248.1412)


   

Eremofortin B

Eremofortin B

C15H20O3 (248.1412)


   

Kanshone C

Kanshone C

C15H20O3 (248.1412)


Kanshone C is a natural product found in Nardostachys jatamansi with data available. Kanshone C is a sesquiterpenoid of Nardostachys chinensis roots[1].

   

3,5,8-Trimethyl-3a,7,7a,8,9,9a-hexahydroazuleno[6,5-b]furan-2,6(3H,4H)-dione #

3,5,8-Trimethyl-3a,7,7a,8,9,9a-hexahydroazuleno[6,5-b]furan-2,6(3H,4H)-dione #

C15H20O3 (248.1412)


   

Tannunolide E

Tannunolide E

C15H20O3 (248.1412)


   

Eregoyazidin

Eregoyazidin

C15H20O3 (248.1412)


   

(+)-Eremoacetal

(+)-Eremoacetal

C15H20O3 (248.1412)


   

Euryopsonol

Euryopsonol

C15H20O3 (248.1412)


   

2alpha-Hydroxyxanthanodiene

[3aR-(3aalpha,4abeta,5beta,7alpha,9aalpha)]-3a,4,4a,5,6,7,9,9a-Octahydro-7-hydroxy-4a,5-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Dehydromyoporone

(S)-(-)-10,11-Dehydrommyoporone

C15H20O3 (248.1412)


   

4-(4,8-Dimethyl-2,4,6-nonatrienyl)-2,6-dioxabicyclo[3.1.0]hexan-3-one

4-(4,8-Dimethyl-2,4,6-nonatrienyl)-2,6-dioxabicyclo[3.1.0]hexan-3-one

C15H20O3 (248.1412)


   

Furodysin lactone

Furodysin lactone

C15H20O3 (248.1412)


   

Tessaric acid

[2R-(2alpha,8alpha,8aalpha)]-1,2,3,4,6,7,8,8a-Octahydro-8,8a-dimethyl-a-methylene-6-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

1beta,10beta-Epoxyfuranoeremophilan-6beta-ol

1beta,10beta-Epoxyfuranoeremophilan-6beta-ol

C15H20O3 (248.1412)


   

Lasiocarpenonol

Lasiocarpenonol

C15H20O3 (248.1412)


   

5-(4,8-Dimethyl-2,4,6-nonatrienyl)-2,6-dioxabicyclo[3.1.0]hexan-3-one

5-(4,8-Dimethyl-2,4,6-nonatrienyl)-2,6-dioxabicyclo[3.1.0]hexan-3-one

C15H20O3 (248.1412)


   

7,9a-dimethyl-4-methylidenedecahydro-3H-oxireno[7,8]naphtho[8a,1-b]furan-3-one

7,9a-dimethyl-4-methylidenedecahydro-3H-oxireno[7,8]naphtho[8a,1-b]furan-3-one

C15H20O3 (248.1412)


   

(+)-Ricciocarpin A

(+)-Ricciocarpin A

C15H20O3 (248.1412)


   
   

Muzigadiolide

Muzigadiolide

C15H20O3 (248.1412)


   
   

Furodysinin lactone

Furodysinin lactone

C15H20O3 (248.1412)


   

Dihydroestafiatone

Dihydroestafiatone

C15H20O3 (248.1412)


   

4,5-Epoxyosmitopsin

4,5-Epoxyosmitopsin

C15H20O3 (248.1412)


   

4alpha-Hydroxyguaia-10(14),11(13)-dien-12,6a-olide

4alpha-Hydroxyguaia-10(14),11(13)-dien-12,6a-olide

C15H20O3 (248.1412)


   

2,6-dihydroxy-5-isopropyl-3,8-dimethyl-tetralin-1-one

2,6-dihydroxy-5-isopropyl-3,8-dimethyl-tetralin-1-one

C15H20O3 (248.1412)


   

Terrecyclic acid A

(+)-Terrecyclic acid A

C15H20O3 (248.1412)


   

Ophioceric acid

(+)-Ophioceric acid

C15H20O3 (248.1412)


   

10beta-Hydroxycichopumilide

10beta-Hydroxycichopumilide

C15H20O3 (248.1412)


   

Rothin A

[3aR-(3aalpha,4alpha,5abeta,9bbeta)]-3a,4,5,5a,6,7,8,9b-Octahydro-4-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Splendolide

[3aS-(3aalpha,5abeta,6beta,9bbeta)]-3a,4,5,5a,6,7,8,9b-Octahydro-6-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

3alpha-Hydroxy-desoxo-achalensolide

3alpha-Hydroxy-desoxo-achalensolide

C15H20O3 (248.1412)


   

3-Hydroxy-14-calamenoic acid

3-Hydroxy-14-calamenoic acid

C15H20O3 (248.1412)


   

Hydroxyisogermafurenolide

Hydroxyisogermafurenolide

C15H20O3 (248.1412)


   

Gloeophyllol C

Gloeophyllol C

C15H20O3 (248.1412)


   

Nobilomethylene

Nobilomethylene

C15H20O3 (248.1412)


   

Pulicaric acid

Pulicaric acid

C15H20O3 (248.1412)


   

Emmotin F

(2R-trans)-3,4-Dihydro-2-hydroxy-3-(1-hydroxy-1-methylethyl)-5,8-dimethyl-1(2H)-naphthalenone

C15H20O3 (248.1412)


   

1alpha-Hydroxy-11beta,13-dihydrokauniolide

1alpha-Hydroxy-11beta,13-dihydrokauniolide

C15H20O3 (248.1412)


   

Hirsutenol A

Hirsutenol A

C15H20O3 (248.1412)


   

3-Oxo-9,11(13)-eremophiladien-12-oic acid

[2R-(2alpha,8alpha,8aalpha)]-1,2,3,5,6,7,8,8a-Octahydro-8,8a-dimethyl-alpha-methylene-7-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

(E)-Linifolone

E-7H-5-Dehydro-4-oxofarnesen-11,13-carbolactone

C15H20O3 (248.1412)


   

[3S-(3R*,3aR*,10E,11aR*)]-3a,5,6,8,9,11a-Hexahydro-3,10-dimethyl-6-methylene-cyclodeca[b]furan-2,7(3H,4H)-dione

[3S-(3R*,3aR*,10E,11aR*)]-3a,5,6,8,9,11a-Hexahydro-3,10-dimethyl-6-methylene-cyclodeca[b]furan-2,7(3H,4H)-dione

C15H20O3 (248.1412)


   

[3aR-(3aalpha,4abeta,5beta,6beta,9aalpha)]-3a,4,4a,5,6,7,8,9a-Octahydro-6-hydroxy-4a,5-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

[3aR-(3aalpha,4abeta,5beta,6beta,9aalpha)]-3a,4,4a,5,6,7,8,9a-Octahydro-6-hydroxy-4a,5-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

alpha-Cannabispiranol

alpha-Cannabispiranol

C15H20O3 (248.1412)


   

alpha-Pipitzol

alpha-Pipitzol

C15H20O3 (248.1412)


   

Placidene F

Placidene F

C15H20O3 (248.1412)


   

9-Oxo-12-hydroxy-10,11-dehydroageraphorone

9-Oxo-12-hydroxy-10,11-dehydroageraphorone

C15H20O3 (248.1412)


   

Involucratolactone

8alpha-Hydroxy-11,13-dihydrodehydrocostuslactone

C15H20O3 (248.1412)


   

1beta,10beta-Epoxyeremophil-11(13)-en-12,8beta-olide

1beta,10beta-Epoxyeremophil-11(13)-en-12,8beta-olide

C15H20O3 (248.1412)


   

pinguisenal

pinguisenal

C15H20O3 (248.1412)


   
   

1alpha-Hydroxy-5alpha,11betaH-guaia-3,10(14)-dien-6alpha,12-olide

1alpha-Hydroxy-5alpha,11betaH-guaia-3,10(14)-dien-6alpha,12-olide

C15H20O3 (248.1412)


   

Heliannuol H

Heliannuol H

C15H20O3 (248.1412)


   

(E)-5-(2,6-Dimethyl-5,7-octadienyl)-3-furancarboxylic acid

(E)-5-(2,6-Dimethyl-5,7-octadienyl)-3-furancarboxylic acid

C15H20O3 (248.1412)


   

Acutifolone B

Acutifolone B

C15H20O3 (248.1412)


   

Periplanone B

Periplanone B

C15H20O3 (248.1412)


   

[2R-(2alpha,4aalpha,8abeta)]-1,2,3,4,4a,5,6,8a-Octahydro-4a,8-dimethyl-alpha-methylene-6-oxo-2-naphthaleneacetic acid

[2R-(2alpha,4aalpha,8abeta)]-1,2,3,4,4a,5,6,8a-Octahydro-4a,8-dimethyl-alpha-methylene-6-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

Deoxyhelicobasidin

Deoxyhelicobasidin

C15H20O3 (248.1412)


   

DTXSID40774177

DTXSID40774177

C15H20O3 (248.1412)


   

Hibiscone B

Hibiscone B

C15H20O3 (248.1412)


   

Rhipocephenal

Rhipocephenal

C15H20O3 (248.1412)


   

Sporogen AO 1

Sporogen AO 1

C15H20O3 (248.1412)


   

ar-Todomatuic acid

(R)-4-(1,5-Dimethyl-3-oxohexyl)benzoic acid

C15H20O3 (248.1412)


   

8,9-Epoxy-8,9-secoglechomonolide

4,7,8,11-Tetrahydro-3,6,10-trimethylfuro[2,3-b]oxacycloundecin-2(12aH)-one

C15H20O3 (248.1412)


   

8-Deoxysalonitenolide

8-Deoxysalonitenolide

C15H20O3 (248.1412)


   

(2S-cis)-1,2,3,4,4a,5,6,7-Octahydro-4a,8-dimethyl-alpha-methylene-4-oxo-2-naphthaleneacetic acid

(2S-cis)-1,2,3,4,4a,5,6,7-Octahydro-4a,8-dimethyl-alpha-methylene-4-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

[R-(E)]-6-(4-Formyl-3-cyclohexen-1-yl)-2-methyl-2,6-heptadienoic acid

[R-(E)]-6-(4-Formyl-3-cyclohexen-1-yl)-2-methyl-2,6-heptadienoic acid

C15H20O3 (248.1412)


   

3-Oxocostusic acid

(2R-cis)-1,2,3,4,4a,5,6,7-Octahydro-4a,8-dimethyl-alpha-methylene-7-oxo-2-naphthaleneacetic acid

C15H20O3 (248.1412)


   

Eumorphistonol

Eumorphistonol

C15H20O3 (248.1412)


   

Heliannuol K

Heliannuol K

C15H20O3 (248.1412)


   

Laureacetal C

Laureacetal C

C15H20O3 (248.1412)


   

5-Hydroxy-11beta,13-dihydroziniolide

5-Hydroxy-11beta,13-dihydroziniolide

C15H20O3 (248.1412)


   

[3aR-(3aalpha,8abeta,9aalpha)]-3a,4,6,7,8,8a,9,9a-Octahydro-5-(hydroxymethyl)-8a-methyl-3-methylenenaphtho[2,3-b]furan-2(3H)-one

[3aR-(3aalpha,8abeta,9aalpha)]-3a,4,6,7,8,8a,9,9a-Octahydro-5-(hydroxymethyl)-8a-methyl-3-methylenenaphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Subergorgic acid

Subergorgic acid

C15H20O3 (248.1412)


   

[3aR-(3aR*,5E,8R*,9E,11aS*)]-3a,4,7,8,11,11a-Hexahydro-8-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

[3aR-(3aR*,5E,8R*,9E,11aS*)]-3a,4,7,8,11,11a-Hexahydro-8-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

C15H20O3 (248.1412)


   

10alpha-Hydroxyeremophila-1,11(13)-dien-12,8beta-olide

10alpha-Hydroxyeremophila-1,11(13)-dien-12,8beta-olide

C15H20O3 (248.1412)


   

Spirolingshuiolide

Spirolingshuiolide

C15H20O3 (248.1412)


   

[3aR-(3aalpha,6alpha,8abeta,9aalpha)]-3a,4,6,7,8,8a,9,9a-Octahydro-6-hydroxy-5,8a-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

[3aR-(3aalpha,6alpha,8abeta,9aalpha)]-3a,4,6,7,8,8a,9,9a-Octahydro-6-hydroxy-5,8a-dimethyl-3-methylene-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Lactaroscrobiculide B

Lactaroscrobiculide B

C15H20O3 (248.1412)


   

[4aS-(4aalpha,5alpha,8abeta,9abeta)]-4a,6,7,8a,9,9a-Hexahydro-3,5,8a-trimethylnaphtho[2,3-b]furan-2,8(4H,5H)-dione

[4aS-(4aalpha,5alpha,8abeta,9abeta)]-4a,6,7,8a,9,9a-Hexahydro-3,5,8a-trimethylnaphtho[2,3-b]furan-2,8(4H,5H)-dione

C15H20O3 (248.1412)


   

Dehydroflourensic acid

(-)-Dehydroflourensic acid

C15H20O3 (248.1412)


   

Wutaipyranol

Wutaipyranol

C15H20O3 (248.1412)


   

Neolitacumone B

Neolitacumone B

C15H20O3 (248.1412)


   

6,7-Dehydrovernopolyanthofuran

(E)-(-)-6-Hydroxy-2,6-dimethyl-1-(4-methyl-2-furanyl)-2,7-octadien-1-one

C15H20O3 (248.1412)


   

Curcumenolactone A

(+)-Curcumenolactone A

C15H20O3 (248.1412)


   

Cyclodehydromyopyrone B

Cyclodehydromyopyrone B

C15H20O3 (248.1412)


   

Pallescensin 3

Pallescensin 3

C15H20O3 (248.1412)


   

ent-7alpha-Hydroxydipophyllolide

[3aS-(3aalpha,4aalpha,8abeta,9aalpha)]- 3a,4,4a,7,8,8a,9,9a-Octahydro-4a-hydroxy-5,8a-dimethyl-3-methylenenaphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

9beta-Hydroxytournefortiolide

[3aS-(3aalpha,5beta,5abeta,9balpha)]-3a,4,5,5a,6,7,8,9b-Octahydro-5-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Palmosalide A

Palmosalide A

C15H20O3 (248.1412)


   

3,5-Dihydro-8-hydroxy-5-isopropyl-2,7-dimethyl-1-benzoxepin-4(2H)-one

3,5-Dihydro-8-hydroxy-5-isopropyl-2,7-dimethyl-1-benzoxepin-4(2H)-one

C15H20O3 (248.1412)


   

2-Oxoverboccidentafuran

2-Oxoverboccidentafuran

C15H20O3 (248.1412)


   

2alpha-hydroxy-eudesm-3,11(13)-dien-12,8beta-olide

2alpha-hydroxy-eudesm-3,11(13)-dien-12,8beta-olide

C15H20O3 (248.1412)


   

Palmosalide C

Palmosalide C

C15H20O3 (248.1412)


   

14beta-Hydroxy-4-isocedren-15,14-olide

14beta-Hydroxy-4-isocedren-15,14-olide

C15H20O3 (248.1412)


   

Cantabrenonic acid

Cantabrenonic acid

C15H20O3 (248.1412)


   

6,7E-Dehydro-5,6-dihydroanthecotuloide

6,7E-Dehydro-5,6-dihydroanthecotuloide

C15H20O3 (248.1412)


   

4-Methoxycinnamyl isovalerate

4-Methoxycinnamyl isovalerate

C15H20O3 (248.1412)


   

Heliannuol G

Heliannuol G

C15H20O3 (248.1412)


   

Viscosumic acid

Viscosumic acid

C15H20O3 (248.1412)


   

Lemnal-1(10)-ene-2,12-dione

(-)-Lemnal-1(10)-ene-2,12-dione

C15H20O3 (248.1412)


   

Phomadecalin A

Phomadecalin A

C15H20O3 (248.1412)


   

(Z)-5-(2,6-Dimethyl-5,7-octadienyl)-3-furancarboxylic acid

(Z)-5-(2,6-Dimethyl-5,7-octadienyl)-3-furancarboxylic acid

C15H20O3 (248.1412)


   

3-Oxoisocostic acid

3-Oxoisocostic acid

C15H20O3 (248.1412)


   

Junipenonoic acid

Junipenonoic acid

C15H20O3 (248.1412)


   

4alpha,5beta-Epoxy-8-epi-inunolide

4alpha,5beta-Epoxy-8-epi-inunolide

C15H20O3 (248.1412)


   

5-Epitelekin

[3aR-(3aalpha,4abeta,8abeta,9aalpha)]-Decahydro-4a-hydroxy-8a-methyl-3,5-bis(methylene)-naphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Graveolide

[3aR-(3aalpha,4abeta,7aalpha,8alpha,9abeta)]-Decahydro-4a,8-dimethyl-3-methyleneazuleno[6,5-b]furan-2,5-dione

C15H20O3 (248.1412)


A sesquiterpene lactone that is decahydroazuleno[6,5-b]furan-2,5-dione substituted by methyl groups at positions 4a and 8 and a methylidene group at position 3. It has been isolated from the aerial parts of Inula hupehensis.

   

[3aS-(3aalpha,5aalpha,6alpha,9balpha)]- 3a,4,5,5a,6,7,8,9b-Octahydro-6-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

[3aS-(3aalpha,5aalpha,6alpha,9balpha)]- 3a,4,5,5a,6,7,8,9b-Octahydro-6-hydroxy-5a,9-dimethyl-3-methylenenaphtho[1,2-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

Finitin

[3S-(3alpha,3aalpha,5abeta,9balpha)]-3a,5,5a,7,8,9b-Hexahydro-3,5a,9-trimethylnaphtho[1,2-b]furan-2,6(3H,4H)-dione

C15H20O3 (248.1412)


   

[3aR-(3aalpha,4aalpha,5alpha,7abeta,9abeta)]-3a,4,4a,5,6,7,7a,9a-Octahydro-5-hydroxy-5,8-dimethyl-3-methylene-azuleno[6,5-b]furan-2(3H)-one

[3aR-(3aalpha,4aalpha,5alpha,7abeta,9abeta)]-3a,4,4a,5,6,7,7a,9a-Octahydro-5-hydroxy-5,8-dimethyl-3-methylene-azuleno[6,5-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

11alpha,13-Dihydrozaluzanin C

11alpha,13-Dihydrozaluzanin C

C15H20O3 (248.1412)


   

4beta,5alpha-Epoxy-4,5-cis-inunolide

4beta,5alpha-Epoxy-4,5-cis-inunolide

C15H20O3 (248.1412)


   

9alpha-Hydroxy-4-isocedren-15,14-olide

9alpha-Hydroxy-4-isocedren-15,14-olide

C15H20O3 (248.1412)


   

Hanfillin

3beta-Hydroxycostunolide

C15H20O3 (248.1412)


   

Cannabispirol

beta-Cannabispiranol

C15H20O3 (248.1412)


   

4-Allyl-2-methoxyphenyl 2-methylbutanoate

4-Allyl-2-methoxyphenyl 2-methylbutanoate

C15H20O3 (248.1412)


   

Dehydrongaione

Dehydrongaione

C15H20O3 (248.1412)


   

Z-7H-5-Dehydro-4-oxofarnesen-11,13-carbolactone

Z-7H-5-Dehydro-4-oxofarnesen-11,13-carbolactone

C15H20O3 (248.1412)


   

Cyclodehydromyopyrone A

Cyclodehydromyopyrone A

C15H20O3 (248.1412)


   

6,7Z-Dehydro-5,6-dihydroanthecotuloide

6,7Z-Dehydro-5,6-dihydroanthecotuloide

C15H20O3 (248.1412)


   

[3R-(3R*,3aS*,10E,11aS*)]-3a,5,6,8,9,11a-Hexahydro-3,10-dimethyl-6-methylene-cyclodeca[b]furan-2,7(3H,4H)-dione

[3R-(3R*,3aS*,10E,11aS*)]-3a,5,6,8,9,11a-Hexahydro-3,10-dimethyl-6-methylene-cyclodeca[b]furan-2,7(3H,4H)-dione

C15H20O3 (248.1412)


   

(2S-trans)-4-Methyl-1-(2,3,4,5-tetrahydro-5-methyl[2,3-bifuran]-5-yl)-3-penten-2-one

(2S-trans)-4-Methyl-1-(2,3,4,5-tetrahydro-5-methyl[2,3-bifuran]-5-yl)-3-penten-2-one

C15H20O3 (248.1412)


   

[3aS-(3aR*,6Z,8R*,10Z,11aS*)]-3a,4,5,8,9,11a-Hexahydro-8-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

[3aS-(3aR*,6Z,8R*,10Z,11aS*)]-3a,4,5,8,9,11a-Hexahydro-8-hydroxy-6,10-dimethyl-3-methylenecyclodeca[b]furan-2(3H)-one

C15H20O3 (248.1412)


   

[3aR-(3aR*,4R*,6E,10E,11aS*)]-3a,4,5,8,9,11a-hexahydro-4-hydroxy-6,10-dimethyl-3-methylene-Cyclodeca[b]furan-2(3H)-one

[3aR-(3aR*,4R*,6E,10E,11aS*)]-3a,4,5,8,9,11a-hexahydro-4-hydroxy-6,10-dimethyl-3-methylene-Cyclodeca[b]furan-2(3H)-one

C15H20O3 (248.1412)


   

3beta-Hydroxy-desoxo-achalensolide

3beta-Hydroxy-desoxo-achalensolide

C15H20O3 (248.1412)


   

Curcumenolactone B

(-)-Curcumenolactone B

C15H20O3 (248.1412)


   

Neobritannilactone B

(6Z,10Z)-4-hydroxy-6,10-dimethyl-3-methylidene-3a,4,5,8,9,11a-hexahydrocyclodeca[b]furan-2-one

C15H20O3 (248.1412)


   
   

Rupestonic acid

5-Azuleneacetic acid, 1,2,4,5,6,7,8,8a-octahydro-3,8-dimethyl-alpha-methylene-2-oxo-, (5S-(5alpha,8beta,8aalpha))-

C15H20O3 (248.1412)


Rupestonic acid, a sesquiterpene, can inhibit influenza virus[1].

   

SCHEMBL529640

SCHEMBL529640

C15H20O3 (248.1412)


   

lyratol D

lyratol D

C15H20O3 (248.1412)


A sesquiterpene lactone that is butan-4-olide substituted by geminal methyl groups at position 5 and a 4-hydroxy-2,6-dimethylbenzyl group at position 4. Isolated from Solanum lyratum, it exhibits cytotoxicity against human cancer cell lines.

   

tetrahydro-3-dehydrozaluzanin C

tetrahydro-3-dehydrozaluzanin C

C15H20O3 (248.1412)


   

2-Octanone, 8-(3,4-methylenedioxyphenyl)

2-Octanone, 8-(3,4-methylenedioxyphenyl)

C15H20O3 (248.1412)


   

(3alpha, 6beta)-Furanoeremophil-1(10)-ene-3, 6-diol

(3alpha, 6beta)-Furanoeremophil-1(10)-ene-3, 6-diol

C15H20O3 (248.1412)


   

8alpha-Hydroxyosmitopsin

8alpha-Hydroxyosmitopsin

C15H20O3 (248.1412)


   

SCHEMBL10299697

SCHEMBL10299697

C15H20O3 (248.1412)


   

Anthecotuloide

Anthecotuloide

C15H20O3 (248.1412)


   

ligufischerin

ligufischerin

C15H20O3 (248.1412)


   
   

(-)-dihydroxanthatin|11alpha,13-dihydroxanthatin|11alpha,13-dihydroxanthin

(-)-dihydroxanthatin|11alpha,13-dihydroxanthatin|11alpha,13-dihydroxanthin

C15H20O3 (248.1412)


   

(6beta,10betaH)-6-Hydroxyfuranoeremophilan-9-one|6beta-hydroxy-10betaH-furanoeremophil-9-one

(6beta,10betaH)-6-Hydroxyfuranoeremophilan-9-one|6beta-hydroxy-10betaH-furanoeremophil-9-one

C15H20O3 (248.1412)


   

(11R)-12-Hydroxy-4,6-eudesmadien-3,8-dione

(11R)-12-Hydroxy-4,6-eudesmadien-3,8-dione

C15H20O3 (248.1412)


   

MEGxp0_001640

MEGxp0_001640

C15H20O3 (248.1412)


   
   

Angelicasaeure-(3-formyl-2,4,4-trimethyl-2,5-cyclohexadien-1-ylester)

Angelicasaeure-(3-formyl-2,4,4-trimethyl-2,5-cyclohexadien-1-ylester)

C15H20O3 (248.1412)


   

(1R*,2R*,4R*)-1,2,3,4-tetrahydro-6-(3-hydroxyprop-1-en-2-yl)-4,5-dimethylnaphthalene-1,2-diol|tuberculariol B

(1R*,2R*,4R*)-1,2,3,4-tetrahydro-6-(3-hydroxyprop-1-en-2-yl)-4,5-dimethylnaphthalene-1,2-diol|tuberculariol B

C15H20O3 (248.1412)


   
   

(6S,9E,11aR)-7,8,11,11a-tetrahydro-3,6,10-trimethylcyclodeca[b]furan-2,5(4H,6H)-dione|curdionolide B

(6S,9E,11aR)-7,8,11,11a-tetrahydro-3,6,10-trimethylcyclodeca[b]furan-2,5(4H,6H)-dione|curdionolide B

C15H20O3 (248.1412)


   
   

placidene B|placidene-B

placidene B|placidene-B

C15H20O3 (248.1412)


   

4-oxo-iphionan-3(5),11(13)-dien-12-oic acid

4-oxo-iphionan-3(5),11(13)-dien-12-oic acid

C15H20O3 (248.1412)


   

8beta-hydroxy-9,10-dehydroeremophilenolide|8beta-hydroxy-eremophil-7(11),9(10)-dien-12,8-olide|eremophilanolide

8beta-hydroxy-9,10-dehydroeremophilenolide|8beta-hydroxy-eremophil-7(11),9(10)-dien-12,8-olide|eremophilanolide

C15H20O3 (248.1412)


   

9-Oxo-11beta,13-dihydrotournefortiolide|9-oxo-6,7alphaH,11betaH-eudesm-4-en-6,12-olide

9-Oxo-11beta,13-dihydrotournefortiolide|9-oxo-6,7alphaH,11betaH-eudesm-4-en-6,12-olide

C15H20O3 (248.1412)


   

(2S,4R,5S,6R,7R,11S)-2,12-dihydroxy-1(10)-aromadendren-14-oic acid 2,14-lactone

(2S,4R,5S,6R,7R,11S)-2,12-dihydroxy-1(10)-aromadendren-14-oic acid 2,14-lactone

C15H20O3 (248.1412)


   
   

glechomafurane

glechomafurane

C15H20O3 (248.1412)


   

desacetyl-beta-cyclotulipinolide

desacetyl-beta-cyclotulipinolide

C15H20O3 (248.1412)


   

2-[(8R*)-7,8-dihydro-1,8-dimethylnaphthalen-2-yl]propane-1,2,3-triol|tuberculariol A

2-[(8R*)-7,8-dihydro-1,8-dimethylnaphthalen-2-yl]propane-1,2,3-triol|tuberculariol A

C15H20O3 (248.1412)


   

8-oxo-alpha-humula-6E,9E-dien-12-oic acid|8-Oxo-??-humula-6E,9E-dien-12-oic acid|humula-1(10)E,4Z,7E-trien-9-on-15-oic acid

8-oxo-alpha-humula-6E,9E-dien-12-oic acid|8-Oxo-??-humula-6E,9E-dien-12-oic acid|humula-1(10)E,4Z,7E-trien-9-on-15-oic acid

C15H20O3 (248.1412)


   
   

(1aS,2R,7S,7aS)-1a,2,7,7a-tetrahydro-2,5-dimethyl-7-(1-methylethyl)naphth[2,3-b]oxirene-2,4-diol|(8beta,9beta,10beta)-8,9-epoxycalamenene-3,10-diol

(1aS,2R,7S,7aS)-1a,2,7,7a-tetrahydro-2,5-dimethyl-7-(1-methylethyl)naphth[2,3-b]oxirene-2,4-diol|(8beta,9beta,10beta)-8,9-epoxycalamenene-3,10-diol

C15H20O3 (248.1412)


   

11alpha,13-Dihydro-(4beta,5alpha,8alpha,10beta)-3-Oxo-1,11(13)-guaiadien-12,8-olide|11alpha,13-Dihydrothieleanin

11alpha,13-Dihydro-(4beta,5alpha,8alpha,10beta)-3-Oxo-1,11(13)-guaiadien-12,8-olide|11alpha,13-Dihydrothieleanin

C15H20O3 (248.1412)


   

(2Z)-2-methylbut-2-enoic acid 2-(2-hydroxy-1-methylethyl)-5-methyphenyl ester|9-hydroxythymol 3-O-angelate

(2Z)-2-methylbut-2-enoic acid 2-(2-hydroxy-1-methylethyl)-5-methyphenyl ester|9-hydroxythymol 3-O-angelate

C15H20O3 (248.1412)


   

2-(2-(4,4-Dimethyl-cyclopentenyl)propyl)-3-formyl-but-2-en-4-olide

2-(2-(4,4-Dimethyl-cyclopentenyl)propyl)-3-formyl-but-2-en-4-olide

C15H20O3 (248.1412)


   

lentinellusfuran

lentinellusfuran

C15H20O3 (248.1412)


   

3beta-hydroxygermacra-trans,trans-1(10),4-dien-trans-8,12-olide

3beta-hydroxygermacra-trans,trans-1(10),4-dien-trans-8,12-olide

C15H20O3 (248.1412)


   

Benzo[e]isobenzofuran-1,4-dione,1,3,4,5,5a,6,7,8,9,9a-decahydro-6,6,9a-trimethyl

Benzo[e]isobenzofuran-1,4-dione,1,3,4,5,5a,6,7,8,9,9a-decahydro-6,6,9a-trimethyl

C15H20O3 (248.1412)


   

DTXSID40560158

DTXSID40560158

C15H20O3 (248.1412)


   

plagiochiline J

plagiochiline J

C15H20O3 (248.1412)


   

trans-7,8-epoxyanol-<3-methylvalerate>

trans-7,8-epoxyanol-<3-methylvalerate>

C15H20O3 (248.1412)


   

4alpha,5beta-epoxydesacetyl laurenebiolide

4alpha,5beta-epoxydesacetyl laurenebiolide

C15H20O3 (248.1412)


   

(E,E)-form-6-(1,3-Dimethyl-1,3-hexadienyl)-4-methoxy-3-methyl-2H-pyran-2-one,9CI|7-Methyl-cyercene-2

(E,E)-form-6-(1,3-Dimethyl-1,3-hexadienyl)-4-methoxy-3-methyl-2H-pyran-2-one,9CI|7-Methyl-cyercene-2

C15H20O3 (248.1412)


   

(1(10)E,4E,6beta,8beta)-8-Hydroxy-1(10),4,11(13)-germacratrien-12,6-olide

(1(10)E,4E,6beta,8beta)-8-Hydroxy-1(10),4,11(13)-germacratrien-12,6-olide

C15H20O3 (248.1412)


   

CHEMBL275932

CHEMBL275932

C15H20O3 (248.1412)


   

3a,4a,5,7,8,8a,9,9a-Octahydro-5,8a-dimethyl-3-methylenenaphtho[2,3-b]furan-2,6(3H,4H)-dione

3a,4a,5,7,8,8a,9,9a-Octahydro-5,8a-dimethyl-3-methylenenaphtho[2,3-b]furan-2,6(3H,4H)-dione

C15H20O3 (248.1412)


   

(6alpha,8beta)-8-Hydroxy-3,11(13)-dudesmadien-12,6-olide

(6alpha,8beta)-8-Hydroxy-3,11(13)-dudesmadien-12,6-olide

C15H20O3 (248.1412)


   

10beta,13-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone|10??-form-10-Hydroxy-7-marasmen-5, 14-olide

10beta,13-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone|10??-form-10-Hydroxy-7-marasmen-5, 14-olide

C15H20O3 (248.1412)


   

SCHEMBL22305507

SCHEMBL22305507

C15H20O3 (248.1412)


   
   

(S)-5-formyl-4,6,6-trimethylcyclohexa-2,4-dienyl angelate

(S)-5-formyl-4,6,6-trimethylcyclohexa-2,4-dienyl angelate

C15H20O3 (248.1412)


   

(-)-(4S,7S,10S)-2-oxo-guaia-1(5),11(13)-dien-12-oic acid

(-)-(4S,7S,10S)-2-oxo-guaia-1(5),11(13)-dien-12-oic acid

C15H20O3 (248.1412)


   

1-oxoeudesm-11(13)-eno-12,8alpha-lactone|rel-(3aR,4aS,5S,8aR,9aS)-octahydro-5,8a-dimethyl-3-methylidenenaphtho[2,3-b]furan-2,8(3H,4H)-dione

1-oxoeudesm-11(13)-eno-12,8alpha-lactone|rel-(3aR,4aS,5S,8aR,9aS)-octahydro-5,8a-dimethyl-3-methylidenenaphtho[2,3-b]furan-2,8(3H,4H)-dione

C15H20O3 (248.1412)


   

7alpha-Hydroxyisoalantolactone

7alpha-Hydroxyisoalantolactone

C15H20O3 (248.1412)


   

(2S,3R,4S)-(+)-ethoxyphenylbotryodiplodin

(2S,3R,4S)-(+)-ethoxyphenylbotryodiplodin

C15H20O3 (248.1412)


   

4beta,5alpha-epoxide-10alphaH-xanthan-1(2),11(13)-dien-7beta,8beta-olide

4beta,5alpha-epoxide-10alphaH-xanthan-1(2),11(13)-dien-7beta,8beta-olide

C15H20O3 (248.1412)


   

(2R,4S)-illicinone B|2R,4S-(+)-illicinone-B

(2R,4S)-illicinone B|2R,4S-(+)-illicinone-B

C15H20O3 (248.1412)


   

isodysetherin

isodysetherin

C15H20O3 (248.1412)


   

isoeugenol-<2-methylbutyrate>

isoeugenol-<2-methylbutyrate>

C15H20O3 (248.1412)


   

6alpha-hydroxy-germacra-4,9-dien-8alpha,12-olide

6alpha-hydroxy-germacra-4,9-dien-8alpha,12-olide

C15H20O3 (248.1412)


   

Furanoeudesmane-3, 4-diol

Furanoeudesmane-3, 4-diol

C15H20O3 (248.1412)


   
   

Tsugicoline D

Tsugicoline D

C15H20O3 (248.1412)


   

(+)-(1R)-(2Z,4E)-4-Oxo-alpha-ionylideneacetic acid|(+)-(2Z,4E)-4-Oxo-alpha-ionylideneacetic acid|(+)-deoxyabscisic acid|(+/-)-1-deoxyabscisic acid|1-deoxy-ABA|abscisic acid|Abscisin II|desoxyabscisic acid

(+)-(1R)-(2Z,4E)-4-Oxo-alpha-ionylideneacetic acid|(+)-(2Z,4E)-4-Oxo-alpha-ionylideneacetic acid|(+)-deoxyabscisic acid|(+/-)-1-deoxyabscisic acid|1-deoxy-ABA|abscisic acid|Abscisin II|desoxyabscisic acid

C15H20O3 (248.1412)


   

3-oxo-1,2-dehydro-4beta,15-dihydro costic acid

3-oxo-1,2-dehydro-4beta,15-dihydro costic acid

C15H20O3 (248.1412)


   

8-oxo-11beta-H-germacra-trans,trans-1(10),4-dien-cis-6,12-olide

8-oxo-11beta-H-germacra-trans,trans-1(10),4-dien-cis-6,12-olide

C15H20O3 (248.1412)


   

Parthenolid

Parthenolid

C15H20O3 (248.1412)


   
   

7-hydroxy-costunolide|7-hydroxycostunolide|7alpha-hydroxycostunolide

7-hydroxy-costunolide|7-hydroxycostunolide|7alpha-hydroxycostunolide

C15H20O3 (248.1412)


   

6,9,9-Trimethyl-9a-hydroxy-4a,7,8,8a,9,9a-hexahydronaphtho[2,3-b]furan-2(4H)-one

6,9,9-Trimethyl-9a-hydroxy-4a,7,8,8a,9,9a-hexahydronaphtho[2,3-b]furan-2(4H)-one

C15H20O3 (248.1412)


   

3alpha-Hydroxytrix-4-en-14,15-olide

3alpha-Hydroxytrix-4-en-14,15-olide

C15H20O3 (248.1412)


   

(6RS,6aRS,9aSR,9bRS)-3,3a,5,6,6a,7,9a,9b-octahydro-3a-hydroxy-6,9-dimethyl-3-methylenebenzo[de]chromen-4(2H)-one|stereumin D

(6RS,6aRS,9aSR,9bRS)-3,3a,5,6,6a,7,9a,9b-octahydro-3a-hydroxy-6,9-dimethyl-3-methylenebenzo[de]chromen-4(2H)-one|stereumin D

C15H20O3 (248.1412)


   
   

(1(10)E,2beta,4E,8alpha)-2-Hydroxy-1(10),4,11(13)-germacratrien-12,8-olide

(1(10)E,2beta,4E,8alpha)-2-Hydroxy-1(10),4,11(13)-germacratrien-12,8-olide

C15H20O3 (248.1412)


   

2beta-hydroxy-13-oxo-alpha-cyperene

2beta-hydroxy-13-oxo-alpha-cyperene

C15H20O3 (248.1412)


   

plagiochilal B

plagiochilal B

C15H20O3 (248.1412)


   

J3.586.150E

J3.586.150E

C15H20O3 (248.1412)


   
   

Terrecyclic acid

Terrecyclic acid

C15H20O3 (248.1412)


   
   

9-Ketone-9-Hydroxy-4(15),11(130-eudesmadien-12-oic acid|9-oxo costic acid

9-Ketone-9-Hydroxy-4(15),11(130-eudesmadien-12-oic acid|9-oxo costic acid

C15H20O3 (248.1412)


   

demethoxywutaiensol methyl ether

demethoxywutaiensol methyl ether

C15H20O3 (248.1412)


   

4alpha,15-dihydro-7alpha-hydroxy-3-desoxyzaluzanin C

4alpha,15-dihydro-7alpha-hydroxy-3-desoxyzaluzanin C

C15H20O3 (248.1412)


   

SCHEMBL530805

SCHEMBL530805

C15H20O3 (248.1412)


   
   

sinularianin A

sinularianin A

C15H20O3 (248.1412)


   

macrophyllilactone E

macrophyllilactone E

C15H20O3 (248.1412)


   
   

araneosoic acid|bisabol-1(7),2,4(13),11(12)-tetraen-15-ol-14-oic acid

araneosoic acid|bisabol-1(7),2,4(13),11(12)-tetraen-15-ol-14-oic acid

C15H20O3 (248.1412)


   

1-(4-methyl-2-furanyl)-2-(5-methyl-5-ethenyl-2-tetrahydrofuranyl)-propan-1-one|2-(5-Ethenyltetrahydro-5-methyl-2-furanyl)-1-(4-methyl-2-furanyl)-1-propanone

1-(4-methyl-2-furanyl)-2-(5-methyl-5-ethenyl-2-tetrahydrofuranyl)-propan-1-one|2-(5-Ethenyltetrahydro-5-methyl-2-furanyl)-1-(4-methyl-2-furanyl)-1-propanone

C15H20O3 (248.1412)


   

lacitemzine

lacitemzine

C15H20O3 (248.1412)


   

(-)-1,2-dihydroxyherberten-12-al|(1S)-3,4-dihydroxy-5-(1,2,2-trimethylcyclopentyl)benzaldehyde

(-)-1,2-dihydroxyherberten-12-al|(1S)-3,4-dihydroxy-5-(1,2,2-trimethylcyclopentyl)benzaldehyde

C15H20O3 (248.1412)


   

3-deoxyamphoricarpolide

3-deoxyamphoricarpolide

C15H20O3 (248.1412)


   

7a-Hydroxy-5-isopropenyl-6-vinyl-3,6-dimethyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one

7a-Hydroxy-5-isopropenyl-6-vinyl-3,6-dimethyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one

C15H20O3 (248.1412)


   

7beta-hydroxy-4(13),7-coloratadiene-11,12-olide|7beta-hydroxy-4(13),8-coloratadien-11,12-olide

7beta-hydroxy-4(13),7-coloratadiene-11,12-olide|7beta-hydroxy-4(13),8-coloratadien-11,12-olide

C15H20O3 (248.1412)


   

LEPIDOPHORON

LEPIDOPHORON

C15H20O3 (248.1412)


   

12-Hydroxy-7-marasmen-5, 14-olide|13,14-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone

12-Hydroxy-7-marasmen-5, 14-olide|13,14-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone

C15H20O3 (248.1412)


   
   

microsphaeropsin B

microsphaeropsin B

C15H20O3 (248.1412)


   

4-Allyl-2-methoxyphenyl 2-methylbutyrate

4-Allyl-2-methoxyphenyl 2-methylbutyrate

C15H20O3 (248.1412)


   

1beta-hydroxy-11(R,S)-8-oxoeremophil-6,9-dien-12-al

1beta-hydroxy-11(R,S)-8-oxoeremophil-6,9-dien-12-al

C15H20O3 (248.1412)


   

1-[(3-methylbut-2-enyl)oxy]-2-methoxy-4-(prop-1-en-3-ol)benzene

1-[(3-methylbut-2-enyl)oxy]-2-methoxy-4-(prop-1-en-3-ol)benzene

C15H20O3 (248.1412)


   

10betaH-8-oxoeremophil-7(11)-en-12,6beta-olide|6-Oxoisoeremophilenolid

10betaH-8-oxoeremophil-7(11)-en-12,6beta-olide|6-Oxoisoeremophilenolid

C15H20O3 (248.1412)


   

(Z)-7-deoxy-7,8-didehydrosydonic acid

(Z)-7-deoxy-7,8-didehydrosydonic acid

C15H20O3 (248.1412)


   

CHEMBL3577366

CHEMBL3577366

C15H20O3 (248.1412)


   

9-(3-methylbutanoyl)-8,10-dehydrothymol

9-(3-methylbutanoyl)-8,10-dehydrothymol

C15H20O3 (248.1412)


A natural product found in Eupatorium cannabinum subspecies asiaticum.

   

CURCUMADIONOL

CURCUMADIONOL

C15H20O3 (248.1412)


   

(6R)-dehydroxysipanolinolide|4-methyl-3-[(1E,3R)-6-oxo-3-(prop-1-en-2-yl)hept-1-en-1-yl]furan-2(5H)-one

(6R)-dehydroxysipanolinolide|4-methyl-3-[(1E,3R)-6-oxo-3-(prop-1-en-2-yl)hept-1-en-1-yl]furan-2(5H)-one

C15H20O3 (248.1412)


   

menelloide A

menelloide A

C15H20O3 (248.1412)


   

8-oxohumula-2,6E-dien-1,12-olide

8-oxohumula-2,6E-dien-1,12-olide

C15H20O3 (248.1412)


   

mitchellene C

mitchellene C

C15H20O3 (248.1412)


A sesquiterpene lactone isolated from the leaves of Eremophila mitchellii.

   

mitchellene A

mitchellene A

C15H20O3 (248.1412)


A sesquiterpene lactone isolated from the leaves of Eremophila mitchellii.

   

menelloide D

menelloide D

C15H20O3 (248.1412)


   

9-oxoneoprocurcumenol

9-oxoneoprocurcumenol

C15H20O3 (248.1412)


   

4alpha-hydroxyguaia-1(10),5(6)-dien-12,8-olide

4alpha-hydroxyguaia-1(10),5(6)-dien-12,8-olide

C15H20O3 (248.1412)


   

3alpha,4-epoxyeudesma-7(11)-en-12,8alpha-olide

3alpha,4-epoxyeudesma-7(11)-en-12,8alpha-olide

C15H20O3 (248.1412)


   

(3S,4S)-4-hydroxy-3-(3-hydroxy-4-methylphenyl)-2,2,3-trimethylcyclopentanone|flamvelutpenoid A

(3S,4S)-4-hydroxy-3-(3-hydroxy-4-methylphenyl)-2,2,3-trimethylcyclopentanone|flamvelutpenoid A

C15H20O3 (248.1412)


   

(2R,3S,5S)-2,3,4,5-tetrahydro-4,4,5,8-tetramethyl-2,5-methano-1-benzoxepin-3,7-diol|flamvelutpenoid B

(2R,3S,5S)-2,3,4,5-tetrahydro-4,4,5,8-tetramethyl-2,5-methano-1-benzoxepin-3,7-diol|flamvelutpenoid B

C15H20O3 (248.1412)


   

SCHEMBL11613073

SCHEMBL11613073

C15H20O3 (248.1412)


   

4alpha,5alpha-epoxyalantolactone|4alpha,5alpha-Epoxyeudesm-11-en-12,8beta-olid

4alpha,5alpha-epoxyalantolactone|4alpha,5alpha-Epoxyeudesm-11-en-12,8beta-olid

C15H20O3 (248.1412)


   

4alpha,5alpha-epoxy-1(10),7(11)-dienegermacr-8alpha,12-olide

4alpha,5alpha-epoxy-1(10),7(11)-dienegermacr-8alpha,12-olide

C15H20O3 (248.1412)


   

(4R,5S)-5-(3-hydroxy-2,6-dimethylphenyl)-4-isopropyldihydrofuran-2-one|limlactone

(4R,5S)-5-(3-hydroxy-2,6-dimethylphenyl)-4-isopropyldihydrofuran-2-one|limlactone

C15H20O3 (248.1412)


   

(5R,6S,7aS)-5-(3-hydroxyprop-1-en-2-yl)-3,6-dimethyl-6-vinyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one|15-hydroxy-isogermafurenolide|linderolide F

(5R,6S,7aS)-5-(3-hydroxyprop-1-en-2-yl)-3,6-dimethyl-6-vinyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one|15-hydroxy-isogermafurenolide|linderolide F

C15H20O3 (248.1412)


   

7alpha-Hydroxy-4,11-cadinadiene-3,8-dione

7alpha-Hydroxy-4,11-cadinadiene-3,8-dione

C15H20O3 (248.1412)


   

Euryspongin B

Euryspongin B

C15H20O3 (248.1412)


   

corialactone B

corialactone B

C15H20O3 (248.1412)


   

3-oxo-1,8,11alphaH-eudesm-4-en-12,8-olide|3-oxo-11alpha(H)-eudesm-4-en-8beta,13-olide|3-oxo-7,8,11alphaH-eudesm-4-en-12,8-olide|3-oxo-7alpha,11alpha(H)-eudesm-4-en-8beta,12-olide

3-oxo-1,8,11alphaH-eudesm-4-en-12,8-olide|3-oxo-11alpha(H)-eudesm-4-en-8beta,13-olide|3-oxo-7,8,11alphaH-eudesm-4-en-12,8-olide|3-oxo-7alpha,11alpha(H)-eudesm-4-en-8beta,12-olide

C15H20O3 (248.1412)


   

chondrosterin C

chondrosterin C

C15H20O3 (248.1412)


   

isoeugenyl-isovalerate

isoeugenyl-isovalerate

C15H20O3 (248.1412)


   

(E)-3-((5S,7S,7aS)-3-formyl-7-methyl-2,4,5,6,7,7a-hexahydro-1H-inden-5-yl)-2-methylacrylic acid|nardin A

(E)-3-((5S,7S,7aS)-3-formyl-7-methyl-2,4,5,6,7,7a-hexahydro-1H-inden-5-yl)-2-methylacrylic acid|nardin A

C15H20O3 (248.1412)


   

DTXSID00944753

DTXSID00944753

C15H20O3 (248.1412)


   

(4S,5R,8S)-4-hydroxyguaia-1(10),7(11)-dien-12,8-olide|multistalactone D

(4S,5R,8S)-4-hydroxyguaia-1(10),7(11)-dien-12,8-olide|multistalactone D

C15H20O3 (248.1412)


   

aristoyunnolin D

aristoyunnolin D

C15H20O3 (248.1412)


   

phaeocaulisin D

phaeocaulisin D

C15H20O3 (248.1412)


   

9beta-hydroxyalantolactone

9beta-hydroxyalantolactone

C15H20O3 (248.1412)


   

9-angeloyloxythymol

9-angeloyloxythymol

C15H20O3 (248.1412)


   

Aspergentisyl B

Aspergentisyl B

C15H20O3 (248.1412)


   

(1R,4S,5R,8S)-4-hydroxyguaia-7(11),10(15)-dien-12,8-olide|multistalactone E

(1R,4S,5R,8S)-4-hydroxyguaia-7(11),10(15)-dien-12,8-olide|multistalactone E

C15H20O3 (248.1412)


   

chlojaponilactone A

chlojaponilactone A

C15H20O3 (248.1412)


   

(1beta,5beta)-1-hydroxyguaia-4(15),11(13)-dieno-12,5-lactone|rel-(4R,7S,7aS,10aS)-octahydro-7a-hydroxy-7-methyl-3,10-bis(methylene)-4,410a-methano-10aH-cyclopent[b]oxonin-2(3H)-one

(1beta,5beta)-1-hydroxyguaia-4(15),11(13)-dieno-12,5-lactone|rel-(4R,7S,7aS,10aS)-octahydro-7a-hydroxy-7-methyl-3,10-bis(methylene)-4,410a-methano-10aH-cyclopent[b]oxonin-2(3H)-one

C15H20O3 (248.1412)


   

1-(4-hydroxy-3-methoxyphenyl)oct-4-en-3-one

1-(4-hydroxy-3-methoxyphenyl)oct-4-en-3-one

C15H20O3 (248.1412)


   

jasminoid B

jasminoid B

C15H20O3 (248.1412)


   

(3aR?,4aR?,8aR?,9aR?)-4a-hydroxy-8a-methyl-3,8-dimethylene-3,3a,4,4a,5,6,7,8a,9,9a-decahydro-naphtho[2,3-b]furan-2-one|(5R?,7R?,8R?,10R?)-1,15-methylene-5beta-hydroxy-eudesm-1(15),11(13)-dien-8beta-12-olide|inuloxin C

(3aR?,4aR?,8aR?,9aR?)-4a-hydroxy-8a-methyl-3,8-dimethylene-3,3a,4,4a,5,6,7,8a,9,9a-decahydro-naphtho[2,3-b]furan-2-one|(5R?,7R?,8R?,10R?)-1,15-methylene-5beta-hydroxy-eudesm-1(15),11(13)-dien-8beta-12-olide|inuloxin C

C15H20O3 (248.1412)


   

hostasolide A

hostasolide A

C15H20O3 (248.1412)


   

(3aR?,7aR?)-6-(5-hydroxyhexan-2-yl)-3-methylen-3a,4,7,7a-tetrahydrobenzofuran-2(3H)-one|(4S, 7R?,8R?)-1,4-dimethyl-4-hydroxy-secoeudesm-5(10),11(13)-dien-8beta-12-olide|inuloxin D

(3aR?,7aR?)-6-(5-hydroxyhexan-2-yl)-3-methylen-3a,4,7,7a-tetrahydrobenzofuran-2(3H)-one|(4S, 7R?,8R?)-1,4-dimethyl-4-hydroxy-secoeudesm-5(10),11(13)-dien-8beta-12-olide|inuloxin D

C15H20O3 (248.1412)


   

8-oxo-eremophila-6,9-dien-12-oic acid

8-oxo-eremophila-6,9-dien-12-oic acid

C15H20O3 (248.1412)


   

(2S,4R,5S,6R,7R,9S)-2,9-dihydroxy-1(10)-aromadendren-14-oic acid 2,14-lactone

(2S,4R,5S,6R,7R,9S)-2,9-dihydroxy-1(10)-aromadendren-14-oic acid 2,14-lactone

C15H20O3 (248.1412)


   

11-Hydroxy-8-oxo-beta-cyperon

11-Hydroxy-8-oxo-beta-cyperon

C15H20O3 (248.1412)


   

4-Ketone-4beta-4-Scirpenol

4-Ketone-4beta-4-Scirpenol

C15H20O3 (248.1412)


   

(3alpha,7??H)-3,12-Dihydroxy-9,11(13)-eremophiladien-8-one

(3alpha,7??H)-3,12-Dihydroxy-9,11(13)-eremophiladien-8-one

C15H20O3 (248.1412)


   

9-Hydroxyvelleral

9-Hydroxyvelleral

C15H20O3 (248.1412)


   

seco-germacrane anhydride

seco-germacrane anhydride

C15H20O3 (248.1412)


   

(3aR?,5E,10S?,11aR?)-6,10-dimethyl-3-methylene-3,3a,4,8,9,10,11,11a-octahydro-cyclodeca[b]furan-2,7-dione|(4E,7R?,8R?,10S?)-3-oxo-germacra-4,11(13)-dien-8beta-12-olide|inuloxin A|tayunin

(3aR?,5E,10S?,11aR?)-6,10-dimethyl-3-methylene-3,3a,4,8,9,10,11,11a-octahydro-cyclodeca[b]furan-2,7-dione|(4E,7R?,8R?,10S?)-3-oxo-germacra-4,11(13)-dien-8beta-12-olide|inuloxin A|tayunin

C15H20O3 (248.1412)


   

2alpha,5alpha-peroxyeudesma-3,11-dien-1-one

2alpha,5alpha-peroxyeudesma-3,11-dien-1-one

C15H20O3 (248.1412)


   
   

1,2-dehydro-1,10alpha-dihydropseudoivalin

1,2-dehydro-1,10alpha-dihydropseudoivalin

C15H20O3 (248.1412)


   

Helicobasin

Helicobasin

C15H20O3 (248.1412)


   

Rufuslactone

Rufuslactone

C15H20O3 (248.1412)


   

9alpha,14-dihydroxy-iso-alpha-cedren-15-oic acid-14,15-lactone|9alpha-Hydroxy-4-isocedren-15,14-olide

9alpha,14-dihydroxy-iso-alpha-cedren-15-oic acid-14,15-lactone|9alpha-Hydroxy-4-isocedren-15,14-olide

C15H20O3 (248.1412)


   

(2alpha,8beta)-2-Hydroxy-4,11(13)-eudesmadien-12,8-olide|2alpha-hydroxyeudesma-4,11(13)-dien-12,8beta-olide

(2alpha,8beta)-2-Hydroxy-4,11(13)-eudesmadien-12,8-olide|2alpha-hydroxyeudesma-4,11(13)-dien-12,8beta-olide

C15H20O3 (248.1412)


   

2alpha,13-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone|2??-form-2-Hydroxy-7-marasmen-5, 14-olide

2alpha,13-dihydroxy-marasm-7(8)-en-5-oic acid gamma-lactone|2??-form-2-Hydroxy-7-marasmen-5, 14-olide

C15H20O3 (248.1412)


   

4-Methoxycinnamoyl isovalerate|4-methoxycinnamyl isovalerate

4-Methoxycinnamoyl isovalerate|4-methoxycinnamyl isovalerate

C15H20O3 (248.1412)


   

Isoferulolsenecioat

Isoferulolsenecioat

C15H20O3 (248.1412)


   

(-)-hirsutanol C|hirsutanol C

(-)-hirsutanol C|hirsutanol C

C15H20O3 (248.1412)


   
   

10alpha-hydroxy-1alpha,5alphaH-guaia-3,7(11)-dien-8alpha,12-olide

10alpha-hydroxy-1alpha,5alphaH-guaia-3,7(11)-dien-8alpha,12-olide

C15H20O3 (248.1412)


   

Isorupestonic acid

Isorupestonic acid

C15H20O3 (248.1412)


   

macrophyllilactone A

macrophyllilactone A

C15H20O3 (248.1412)


   

10(14)-dehydro-4H-tomentosin|10-Deoxy,10,14-didehydro-(4xi,8beta,10alpha)-4,10-Dihydroxy-4,5-seco-1(5),11(13)-guaiadien-12,8-olide

10(14)-dehydro-4H-tomentosin|10-Deoxy,10,14-didehydro-(4xi,8beta,10alpha)-4,10-Dihydroxy-4,5-seco-1(5),11(13)-guaiadien-12,8-olide

C15H20O3 (248.1412)


   
   

2beta-hydroxy-8-desoxy-11alpha,13-dihydrorupicolin B

2beta-hydroxy-8-desoxy-11alpha,13-dihydrorupicolin B

C15H20O3 (248.1412)


   
   

Eugenyl valerate

Eugenyl valerate

C15H20O3 (248.1412)


   

Arborescin

Arborescin

C15H20O3 (248.1412)


An organic heterotetracyclic compound and guaianolide sesquiterpene lactone that is arglabin in which the exocyclic double bond has been reduced to a single bond. It is found in Artemesia adamsii.

   

(E,E)-form-6-(1,3-Dimethyl-1,3-hexadienyl)-2-methoxy-3-methyl-4H-pyran-4-one|7-methylcyercene B|7-Methylcyercene-B

(E,E)-form-6-(1,3-Dimethyl-1,3-hexadienyl)-2-methoxy-3-methyl-4H-pyran-4-one|7-methylcyercene B|7-Methylcyercene-B

C15H20O3 (248.1412)


   

(3aS,5aS,8S,9aS)-4,5,5a,6,7,8,9,9a-octahydro-9a-hydroxy-1,8-dimethyl-5-methylenenaphtho[2,1-b]furan-2-(3aH)-one|(8alpha)-6,8-dihydroxycadina-7(11),10(15)-dien-12-oic acid gamma-lactone

(3aS,5aS,8S,9aS)-4,5,5a,6,7,8,9,9a-octahydro-9a-hydroxy-1,8-dimethyl-5-methylenenaphtho[2,1-b]furan-2-(3aH)-one|(8alpha)-6,8-dihydroxycadina-7(11),10(15)-dien-12-oic acid gamma-lactone

C15H20O3 (248.1412)


   

anhydro deconjugated lactarorufin A|anhydrolactafurin A

anhydro deconjugated lactarorufin A|anhydrolactafurin A

C15H20O3 (248.1412)


   

3-oxo-11alpha-H-germacra-1(10)E,4Z-dien-12,6alpha-olide

3-oxo-11alpha-H-germacra-1(10)E,4Z-dien-12,6alpha-olide

C15H20O3 (248.1412)


   

methyl 2-O-(11-dodecene-2,4-diynyl)-2-hydroxy ethanoate|methyl montiporate C

methyl 2-O-(11-dodecene-2,4-diynyl)-2-hydroxy ethanoate|methyl montiporate C

C15H20O3 (248.1412)


   
   

3,12-anhydrolactarorufin A

3,12-anhydrolactarorufin A

C15H20O3 (248.1412)


   

2,3-dihydroisoambrosin|6beta-hydroxy-4-oxo-10alphaH-ambros-7(11)-en-12-oic acid-lactone|6beta-Hydroxy-4-oxo-10alphaH-ambros-7(11)-en-12-saeure-lacton|Isodamsin

2,3-dihydroisoambrosin|6beta-hydroxy-4-oxo-10alphaH-ambros-7(11)-en-12-oic acid-lactone|6beta-Hydroxy-4-oxo-10alphaH-ambros-7(11)-en-12-saeure-lacton|Isodamsin

C15H20O3 (248.1412)


   

(1S)-2,6,6-trimethyl-4-oxobicyclo[3.1.1]hept-2-enyl-(2E)-2-methylbut-2-enoate|1-angeloyloxyverbenone|ferulagone

(1S)-2,6,6-trimethyl-4-oxobicyclo[3.1.1]hept-2-enyl-(2E)-2-methylbut-2-enoate|1-angeloyloxyverbenone|ferulagone

C15H20O3 (248.1412)


   

ACon1_001918

ACon1_001918

C15H20O3 (248.1412)


   

(2xi,8xi,10xi)-2-Hydroxy-4(15),7(11)-eudesmadien-12,8-olide|Commiferin

(2xi,8xi,10xi)-2-Hydroxy-4(15),7(11)-eudesmadien-12,8-olide|Commiferin

C15H20O3 (248.1412)


   

4beta,10beta-epoxy-1alpha(H),5alpha(H)-guai-11(13)-en-8alpha,12-olide

4beta,10beta-epoxy-1alpha(H),5alpha(H)-guai-11(13)-en-8alpha,12-olide

C15H20O3 (248.1412)


   

SCHEMBL12702505

SCHEMBL12702505

C15H20O3 (248.1412)


   
   

litseaverticillol H

litseaverticillol H

C15H20O3 (248.1412)


   

4-(Prenyloxy)benzenepropionic acid methyl ester

4-(Prenyloxy)benzenepropionic acid methyl ester

C15H20O3 (248.1412)


   

15-Aldehyde-15-Hydroxy-3,11(13)-eudesmadien-12-oic acid

15-Aldehyde-15-Hydroxy-3,11(13)-eudesmadien-12-oic acid

C15H20O3 (248.1412)


   

Aeruginolactone

Aeruginolactone

C15H20O3 (248.1412)


   

(4aSR,8RS,8aRS,9aSR)-4a,7,8,8a,9,9a-hexahydro-8-hydroxy-3,5,8a-trimethylnaphtho[2,3-b]furan-2(4H)-one|1beta-hydroxyeudesma-3(4),7(11)-dien-12,8alpha-olide|serralactone A|serralactone A

(4aSR,8RS,8aRS,9aSR)-4a,7,8,8a,9,9a-hexahydro-8-hydroxy-3,5,8a-trimethylnaphtho[2,3-b]furan-2(4H)-one|1beta-hydroxyeudesma-3(4),7(11)-dien-12,8alpha-olide|serralactone A|serralactone A

C15H20O3 (248.1412)


   

ACMC-20mcug

ACMC-20mcug

C15H20O3 (248.1412)


   
   

cichoriolide|cichoriolide A

cichoriolide|cichoriolide A

C15H20O3 (248.1412)


   

11-dodecene-2,4-diynyl methoxyacetate|Methoxyacetate-11-Dodecene-2,4-diyn-1-ol

11-dodecene-2,4-diynyl methoxyacetate|Methoxyacetate-11-Dodecene-2,4-diyn-1-ol

C15H20O3 (248.1412)


   
   

(-)-sinularianin B|sinularianin B

(-)-sinularianin B|sinularianin B

C15H20O3 (248.1412)


   
   

2-hydroxy-9,11-dimethyl-10-methylene-3-oxatricyclo<7.3.1.02,6>tridec-5-en-4-one

2-hydroxy-9,11-dimethyl-10-methylene-3-oxatricyclo<7.3.1.02,6>tridec-5-en-4-one

C15H20O3 (248.1412)


   

7alpha,8alpha-epoxy-12-hydroxy-9-one-eudesm-4(15),11(13)-diene|petrovin A

7alpha,8alpha-epoxy-12-hydroxy-9-one-eudesm-4(15),11(13)-diene|petrovin A

C15H20O3 (248.1412)


   

Herbacin hydroxybutenolide

Herbacin hydroxybutenolide

C15H20O3 (248.1412)


   

4beta-Hydroxyeudesma-5,11-dien-12,8beta-olid

4beta-Hydroxyeudesma-5,11-dien-12,8beta-olid

C15H20O3 (248.1412)


   

2,3-dehydro-11alpha,13-dihydroconfertin

2,3-dehydro-11alpha,13-dihydroconfertin

C15H20O3 (248.1412)


   

(4R)-4,5-dihydro-4-(3-hydroxy-2,6-dimethylbenzyl)-5,5-dimethylfuran-2(3H)-one|lycifuranone A

(4R)-4,5-dihydro-4-(3-hydroxy-2,6-dimethylbenzyl)-5,5-dimethylfuran-2(3H)-one|lycifuranone A

C15H20O3 (248.1412)


   

2,3-Dihydro-3,5-dimethyl-6-(4-oxopentyl)benzofuran-2-ol

2,3-Dihydro-3,5-dimethyl-6-(4-oxopentyl)benzofuran-2-ol

C15H20O3 (248.1412)


   

1-oxo-eudesm-4(15)-en-5alpha,6beta,7alpha,11betaH-12,6-olide

1-oxo-eudesm-4(15)-en-5alpha,6beta,7alpha,11betaH-12,6-olide

C15H20O3 (248.1412)


   
   

3-oxo-eremophila-1(10),11(13)-dien-12-oic acid

3-oxo-eremophila-1(10),11(13)-dien-12-oic acid

C15H20O3 (248.1412)


   
   

Dehydrofluorensic acid

Dehydrofluorensic acid

C15H20O3 (248.1412)


   

(4R,5S,6R,7R,11S)-2-oxo-1(10)-aromadendren-12-oic acid

(4R,5S,6R,7R,11S)-2-oxo-1(10)-aromadendren-12-oic acid

C15H20O3 (248.1412)


   

6-oxodendrolasinolide

6-oxodendrolasinolide

C15H20O3 (248.1412)


   

(5beta,7beta,8alpha,10alpha)-7-Hydroxy-3,11(13)-eudesmadien-12,8-olide|ent-7alpha-hydroxydiplophyllolide

(5beta,7beta,8alpha,10alpha)-7-Hydroxy-3,11(13)-eudesmadien-12,8-olide|ent-7alpha-hydroxydiplophyllolide

C15H20O3 (248.1412)


   

4,5-epoxysecoswartzianin A

4,5-epoxysecoswartzianin A

C15H20O3 (248.1412)


   

zealexin A4

zealexin A4

C15H20O3 (248.1412)


   

2,2,6,9-tetramethyl-3,6-dihydro-2H-1-benzoxocine-3,8-diol

2,2,6,9-tetramethyl-3,6-dihydro-2H-1-benzoxocine-3,8-diol

C15H20O3 (248.1412)


   

Ivangustin

(3aR,8R,8aR,9aR)-8-hydroxy-5,8a-dimethyl-3-methylidene-4,6,7,8,9,9a-hexahydro-3aH-benzo[f][1]benzofuran-2-one

C15H20O3 (248.1412)


Ivangustin is a natural product found in Pentanema britannicum, Inula japonica, and Eriocephalus africanus with data available.

   

IJ-5 compound

Naphtho[2,3-b]furan-2(3H)-one, 3a,5,6,7,8,8a,9,9a-octahydro-8-hydroxy-5,8a-dimethyl-3-methylene-, [3aR-(3aalpha,5beta,8beta,8abeta,9aalpha)]-

C15H20O3 (248.1412)


1beta-Hydroxyalantolactone is a sesquiterpene lactone. 1beta-Hydroxyalantolactone is a natural product found in Pentanema britannicum, Inula japonica, and Inula helenium with data available. 1beta-Hydroxyalantolactone modulate many processes that influence inflammatory reactions[1]. 1beta-Hydroxyalantolactone modulate many processes that influence inflammatory reactions[1].

   

Inuviscolide

(3aR,4aR,5R,7aS,9aS)-5-hydroxy-5-methyl-3,8-dimethylidenedecahydroazuleno[6,5-b]furan-2(3H)-one

C15H20O3 (248.1412)


Inuviscolide is a sesquiterpene lactone that is decahydroazuleno[6,5-b]furan-2(3H)-one substituted by a hydroxy group at position 5, a methyl group at position 5 and methylidene groups at positions 3 and 8 (the 3aR,4aR,5R,7aS,9aS stereoisomer). Isolated from the aerial parts of Inula hupehensis, it exhibits anti-inflammatory activity. It has a role as an anti-inflammatory agent and a plant metabolite. It is a gamma-lactone, an organic heterotricyclic compound, a sesquiterpene lactone and a tertiary alcohol. Inuviscolide is a natural product found in Helichrysum dasyanthum, Pulicaria incisa, and other organisms with data available. A sesquiterpene lactone that is decahydroazuleno[6,5-b]furan-2(3H)-one substituted by a hydroxy group at position 5, a methyl group at position 5 and methylidene groups at positions 3 and 8 (the 3aR,4aR,5R,7aS,9aS stereoisomer). Isolated from the aerial parts of Inula hupehensis, it exhibits anti-inflammatory activity.

   

Reynosin

NAPHTHO(1,2-B)FURAN-2(3H)-ONE, DECAHYDRO-6-HYDROXY-5A-METHYL-3,9-BIS(METHYLENE)-, (3AS-(3A.ALPHA.,5A.BETA.,6.BETA.,9A.ALPHA.,9B.BETA.))-

C15H20O3 (248.1412)


Reynosin is a sesquiterpene lactone of the eudesmanolide group, found particularly in Magnolia grandiflora and Laurus nobilis. It has a role as a metabolite. It is a sesquiterpene lactone and an organic heterotricyclic compound. Reynosin is a natural product found in Centaurea uniflora, Eupatorium capillifolium, and other organisms with data available. A sesquiterpene lactone of the eudesmanolide group, found particularly in Magnolia grandiflora and Laurus nobilis.

   

Arteannuin B

3H-Oxireno(7,8)naphtho(8a,1-b)furan-3-one, decahydro-7,9a-dimethyl-4-methylene-, (1aR-(1aalpha,1bR*,4abeta,7beta,7abeta,9aalpha))-

C15H20O3 (248.1412)


Arteannuin B is a natural product found in Artemisia apiacea, Artemisia annua, and Artemisia carvifolia with data available. Arteannuin B co-occurs with artemisinin, which is the potent antimalarial principle of the Chinese medicinal herb Artemisia annua (Asteraceae)[1]. Arteannuin B shows anti-SARS-CoV-2 potential with an EC50 of 10.28 μM[2]. Arteannuin B co-occurs with artemisinin, which is the potent antimalarial principle of the Chinese medicinal herb Artemisia annua (Asteraceae)[1]. Arteannuin B shows anti-SARS-CoV-2 potential with an EC50 of 10.28 μM[2].

   

Atractylenolide III

Atractylenolide III

C15H20O3 (248.1412)


Annotation level-1 Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells. Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells.

   

3-(hydroxymethyl)-2-methyl-6-[(E)-pent-3-enyl]-2,3-dihydro-1-benzofuran-4-ol

NCGC00380081-01!3-(hydroxymethyl)-2-methyl-6-[(E)-pent-3-enyl]-2,3-dihydro-1-benzofuran-4-ol

C15H20O3 (248.1412)


   

7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8a-tetrahydro-3aH-cyclohepta[b]furan-2-one

NCGC00168921-02!7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8a-tetrahydro-3aH-cyclohepta[b]furan-2-one

C15H20O3 (248.1412)


   

C15H20O3_(2R,5S,9R,12R)-13,13-Dimethyl-7-oxatetracyclo[7.5.0.0~1,5~.0~2,12~]tetradecane-4,8-dione

NCGC00385922-01_C15H20O3_(2R,5S,9R,12R)-13,13-Dimethyl-7-oxatetracyclo[7.5.0.0~1,5~.0~2,12~]tetradecane-4,8-dione

C15H20O3 (248.1412)


   

C15H20O3_Cycloprop[e]indene-1a(1H)-carboxylic acid, 2-formyl-3a,4,5,6,6a,6b-hexahydro-5,5,6b-trimethyl-, (1aS,3aS,6aS,6bR)

NCGC00385632-01_C15H20O3_Cycloprop[e]indene-1a(1H)-carboxylic acid, 2-formyl-3a,4,5,6,6a,6b-hexahydro-5,5,6b-trimethyl-, (1aS,3aS,6aS,6bR)-

C15H20O3 (248.1412)


   

C15H20O3_Bisoxireno[4,5:8,9]cyclodeca[1,2-b]furan, 1a,2,6,6a,7a,8,9,9a-octahydro-1a,5,7a-trimethyl

NCGC00385934-01_C15H20O3_Bisoxireno[4,5:8,9]cyclodeca[1,2-b]furan, 1a,2,6,6a,7a,8,9,9a-octahydro-1a,5,7a-trimethyl-

C15H20O3 (248.1412)


   

C15H20O3_(3aR,4aR,8aR,9aR)-4a-Hydroxy-8a-methyl-3,5-bis(methylene)decahydronaphtho[2,3-b]furan-2(3H)-one

NCGC00384720-01_C15H20O3_(3aR,4aR,8aR,9aR)-4a-Hydroxy-8a-methyl-3,5-bis(methylene)decahydronaphtho[2,3-b]furan-2(3H)-one

C15H20O3 (248.1412)


   

C15H20O3_(9E)-3,6,10-Trimethyl-7,8,11,11a-tetrahydrocyclodeca[b]furan-2,5(4H,6H)-dione

NCGC00385953-01_C15H20O3_(9E)-3,6,10-Trimethyl-7,8,11,11a-tetrahydrocyclodeca[b]furan-2,5(4H,6H)-dione

C15H20O3 (248.1412)


   

C15H20O3_5-Azuleneacetic acid, 1,2,4,5,6,7,8,8a-octahydro-3,8-dimethyl-alpha-methylene-2-oxo-, (5R,8S,8aS)

NCGC00180565-02_C15H20O3_5-Azuleneacetic acid, 1,2,4,5,6,7,8,8a-octahydro-3,8-dimethyl-alpha-methylene-2-oxo-, (5R,8S,8aS)-

C15H20O3 (248.1412)


   

C15H20O3_(2E)-6-Hydroxy-2-methyl-6-(4-methylphenyl)-2-heptenoic acid

NCGC00380995-01_C15H20O3_(2E)-6-Hydroxy-2-methyl-6-(4-methylphenyl)-2-heptenoic acid

C15H20O3 (248.1412)


   

C15H20O3_Azuleno[6,5-b]furan-2,5-dione, decahydro-4a,8-dimethyl-3-methylene-, (3aR,4aS,7aS,8R,9aS)

NCGC00180818-02_C15H20O3_Azuleno[6,5-b]furan-2,5-dione, decahydro-4a,8-dimethyl-3-methylene-, (3aR,4aS,7aS,8R,9aS)-

C15H20O3 (248.1412)


   

2-Hydroxyalantolactone

7-hydroxy-5,8a-dimethyl-3-methylidene-2H,3H,3aH,5H,6H,7H,8H,8aH,9H,9aH-naphtho[2,3-b]furan-2-one

C15H20O3 (248.1412)


   

2-[[(2R,3S)-2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-3,4-dihydro-2H-chromen-7-yl]oxy]oxane-3,4,5-triol

2-[[(2R,3S)-2-(3,4-dihydroxyphenyl)-3,5-dihydroxy-3,4-dihydro-2H-chromen-7-yl]oxy]oxane-3,4,5-triol

C15H20O3 (248.1412)


   

(4S,5Z,6S)-4-(2-methoxy-2-oxoethyl)-5-[2-[(E)-3-phenylprop-2-enoyl]oxyethylidene]-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid

(4S,5Z,6S)-4-(2-methoxy-2-oxoethyl)-5-[2-[(E)-3-phenylprop-2-enoyl]oxyethylidene]-6-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4H-pyran-3-carboxylic acid

C15H20O3 (248.1412)


   

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione

C15H20O3 (248.1412)


   

(3aR,8R,8aR,9aR)-8-hydroxy-8a-methyl-3,5-dimethylidene-3a,4,4a,6,7,8,9,9a-octahydrobenzo[f][1]benzofuran-2-one

(3aR,8R,8aR,9aR)-8-hydroxy-8a-methyl-3,5-dimethylidene-3a,4,4a,6,7,8,9,9a-octahydrobenzo[f][1]benzofuran-2-one

C15H20O3 (248.1412)


   

7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8a-tetrahydro-3aH-cyclohepta[b]furan-2-one

7-methyl-3-methylidene-6-(3-oxobutyl)-4,7,8,8a-tetrahydro-3aH-cyclohepta[b]furan-2-one

C15H20O3 (248.1412)


   

GLECHOMAFURAN

GLECHOMAFURAN

C15H20O3 (248.1412)


   

(3aR,5aR,9bR)-3a-hydroxy-5a,9-dimethyl-3-methylidene-4,5,6,7,8,9b-hexahydrobenzo[g][1]benzofuran-2-one

(3aR,5aR,9bR)-3a-hydroxy-5a,9-dimethyl-3-methylidene-4,5,6,7,8,9b-hexahydrobenzo[g][1]benzofuran-2-one

C15H20O3 (248.1412)


   

Pterosin A

Pterosin A

C15H20O3 (248.1412)


CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 35 INTERNAL_ID 35; CONFIDENCE Reference Standard (Level 1)

   

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione_major

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione_major

C15H20O3 (248.1412)


   

Parthenium_major

Parthenium_major

C15H20O3 (248.1412)


   

Parthenolide_major

Parthenolide_major

C15H20O3 (248.1412)


   

Parthenium_14.3\\%

Parthenium_14.3\\%

C15H20O3 (248.1412)


   

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione_81.6\\%

(3aS,5R,5aS,8aS,9aR)-5,8a-dimethyl-1-methylidene-3a,4,5,5a,6,7,9,9a-octahydroazuleno[6,7-b]furan-2,8-dione_81.6\\%

C15H20O3 (248.1412)


   

Parthenolide_minor

Parthenolide_minor

C15H20O3 (248.1412)


   

Atractylenolide-III

Naphtho(2,3-b)furan-2(4H)-one, 4a,5,6,7,8,8a,9,9a-octahydro-9a-hydroxy-3,8a-dimethyl-5-methylene-, (4aS,8aR,9aS)-

C15H20O3 (248.1412)


Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells. Atractylenolide-III is the main component of Atractylodes rhizome and has the activity of inducing apoptosis in lung cancer cells.