Mellein

(3R)-8-hydroxy-3-methyl-3,4-dihydro-1H-2-benzopyran-1-one

C10H10O3 (178.062991)


Mellein, also known as (R)-mellein, is a member of the class of compounds known as 2-benzopyrans. 2-benzopyrans are organic aromatic compounds that 1-benzopyran, a bicyclic compound made up of a benzene ring fused to a pyran, so that the oxygen atom is at the 2-position. Mellein is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). Mellein can be found in cocoa powder, which makes mellein a potential biomarker for the consumption of this food product. Mellein is a dihydroisocoumarin, a phenolic compound produced by Aspergillus ochraceus .

   

Mellein

Mellein

C10H10O3 (178.062991)


D009676 - Noxae > D011042 - Poisons > D009793 - Ochratoxins D009676 - Noxae > D011042 - Poisons > D009183 - Mycotoxins CONFIDENCE isolated standard

   

(±)-Mellein

(3R)-8-hydroxy-3-methyl-3,4-dihydro-1H-2-benzopyran-1-one

C10H10O3 (178.062991)


D009676 - Noxae > D011042 - Poisons > D009793 - Ochratoxins D009676 - Noxae > D011042 - Poisons > D009183 - Mycotoxins

   

3,6,9,12-tetrakis(2-methylpropyl)-15-(sec-butyl)-1,4,7,10,13-pentaazacyclopentadeca-1,4,7,10,13-pentaene-2,5,8,11,14-pentol

3,6,9,12-tetrakis(2-methylpropyl)-15-(sec-butyl)-1,4,7,10,13-pentaazacyclopentadeca-1,4,7,10,13-pentaene-2,5,8,11,14-pentol

C30H55N5O5 (565.420298)


   

9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehex-1-en-1-yl)-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehex-1-en-1-yl)-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

C27H42O2 (398.3184632)


   

(3ar,4s,6ar)-4-ethyl-3-methylidene-dihydro-3ah-furo[2,3-c]furan-2,6-dione

(3ar,4s,6ar)-4-ethyl-3-methylidene-dihydro-3ah-furo[2,3-c]furan-2,6-dione

C9H10O4 (182.057906)


   

n-[(3s,6s,9s,15s,18s,24s)-6-[1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-5,8,11,17,20,21,23,25-octahydroxy-3-[2-(c-hydroxycarbonimidoyl)ethyl]-15-[(1r)-1-hydroxyethyl]-26-(hydroxymethyl)-2,14-dioxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0⁹,¹³]heptacosa-4,7,16,22-tetraen-18-yl]hexadecanimidic acid

n-[(3s,6s,9s,15s,18s,24s)-6-[1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-5,8,11,17,20,21,23,25-octahydroxy-3-[2-(c-hydroxycarbonimidoyl)ethyl]-15-[(1r)-1-hydroxyethyl]-26-(hydroxymethyl)-2,14-dioxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0⁹,¹³]heptacosa-4,7,16,22-tetraen-18-yl]hexadecanimidic acid

C51H82N8O17 (1078.5797642)


   

(2r)-2-[(1r,3ar,5as,7s,9as,9br,11ar)-7-hydroxy-9a,11a-dimethyl-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl]-6-methyl-5-methylideneheptanoic acid

(2r)-2-[(1r,3ar,5as,7s,9as,9br,11ar)-7-hydroxy-9a,11a-dimethyl-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl]-6-methyl-5-methylideneheptanoic acid

C28H44O3 (428.3290274)


   

9,10-dihydroxy-7-methoxy-3-methyl-3h,4h-naphtho[2,3-c]pyran-1-one

9,10-dihydroxy-7-methoxy-3-methyl-3h,4h-naphtho[2,3-c]pyran-1-one

C15H14O5 (274.0841194)


   

n-{6-[1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-5,8,11,17,20,21,23,25-octahydroxy-3-[2-(c-hydroxycarbonimidoyl)ethyl]-15-(1-hydroxyethyl)-26-(hydroxymethyl)-2,14-dioxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0⁹,¹³]heptacosa-4,7,16,22-tetraen-18-yl}hexadecanimidic acid

n-{6-[1,2-dihydroxy-2-(4-hydroxyphenyl)ethyl]-5,8,11,17,20,21,23,25-octahydroxy-3-[2-(c-hydroxycarbonimidoyl)ethyl]-15-(1-hydroxyethyl)-26-(hydroxymethyl)-2,14-dioxo-1,4,7,13,16,22-hexaazatricyclo[22.3.0.0⁹,¹³]heptacosa-4,7,16,22-tetraen-18-yl}hexadecanimidic acid

C51H82N8O17 (1078.5797642)


   

(2s)-2,3-dihydroxypropyl 2,4-dihydroxy-6-methylbenzoate

(2s)-2,3-dihydroxypropyl 2,4-dihydroxy-6-methylbenzoate

C11H14O6 (242.0790344)


   

2-({[(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-2-[(2-carboxyacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl]oxy}carbonyl)butanoic acid

2-({[(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-2-[(2-carboxyacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl]oxy}carbonyl)butanoic acid

C38H34O18 (778.1745064)


   

2-{7-hydroxy-9a,11a-dimethyl-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl}-6-methyl-5-methylideneheptanoic acid

2-{7-hydroxy-9a,11a-dimethyl-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-1-yl}-6-methyl-5-methylideneheptanoic acid

C28H44O3 (428.3290274)


   

9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

C27H42O2 (398.3184632)


   

13-chloro-14-hydroxy-16-methoxy-3-methyl-3,4,5,7,8,12-hexahydro-2-benzoxacyclotetradecine-1,6,11-trione

13-chloro-14-hydroxy-16-methoxy-3-methyl-3,4,5,7,8,12-hexahydro-2-benzoxacyclotetradecine-1,6,11-trione

C19H21ClO6 (380.10265960000004)


   

5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[8.7.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadecan-15-ol

5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[8.7.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadecan-15-ol

C27H42O2 (398.3184632)


   

2-{[(6-{2-[(2-carboxyacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl}-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl)oxy]carbonyl}butanoic acid

2-{[(6-{2-[(2-carboxyacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl}-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl)oxy]carbonyl}butanoic acid

C38H34O18 (778.1745064)


   

(3s,6s,9s,12s,15s)-3-[(2s)-butan-2-yl]-6,9,12,15-tetrakis(2-methylpropyl)-1,4,7,10,13-pentaazacyclopentadeca-1,4,7,10,13-pentaene-2,5,8,11,14-pentol

(3s,6s,9s,12s,15s)-3-[(2s)-butan-2-yl]-6,9,12,15-tetrakis(2-methylpropyl)-1,4,7,10,13-pentaazacyclopentadeca-1,4,7,10,13-pentaene-2,5,8,11,14-pentol

C30H55N5O5 (565.420298)


   

(2r)-5-hydroxy-2-methyl-2,3-dihydro-1-benzopyran-4-one

(2r)-5-hydroxy-2-methyl-2,3-dihydro-1-benzopyran-4-one

C10H10O3 (178.062991)


   

(3r,9e)-13-chloro-14-hydroxy-16-methoxy-3-methyl-3,4,5,7,8,12-hexahydro-2-benzoxacyclotetradecine-1,6,11-trione

(3r,9e)-13-chloro-14-hydroxy-16-methoxy-3-methyl-3,4,5,7,8,12-hexahydro-2-benzoxacyclotetradecine-1,6,11-trione

C19H21ClO6 (380.10265960000004)


   

1-{15-hydroxy-5-methyl-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadeca-6,10-dien-6-yl}-5-methyl-4-methylidenehexan-1-one

1-{15-hydroxy-5-methyl-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadeca-6,10-dien-6-yl}-5-methyl-4-methylidenehexan-1-one

C27H38O3 (410.2820798)


   

1-(2,6-dihydroxyphenyl)pentan-1-one

1-(2,6-dihydroxyphenyl)pentan-1-one

C11H14O3 (194.0942894)


   

3-[hydroxy(1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalen-1-yl)methylidene]-5-(1-hydroxyethyl)-1-methylpyrrolidine-2,4-dione

3-[hydroxy(1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalen-1-yl)methylidene]-5-(1-hydroxyethyl)-1-methylpyrrolidine-2,4-dione

C21H31NO4 (361.22529660000004)


   

5-(1-hydroxyethyl)-1-methyl-3-(1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl)pyrrolidine-2,4-dione

5-(1-hydroxyethyl)-1-methyl-3-(1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl)pyrrolidine-2,4-dione

C21H31NO4 (361.22529660000004)


   

(3s)-9,10-dihydroxy-7-methoxy-3-methyl-3h,4h-naphtho[2,3-c]pyran-1-one

(3s)-9,10-dihydroxy-7-methoxy-3-methyl-3h,4h-naphtho[2,3-c]pyran-1-one

C15H14O5 (274.0841194)


   

6-{7,8-dihydroxy-2-[(3-methoxy-3-oxopropanoyl)oxy]-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl}-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl 1-methyl propanedioate

6-{7,8-dihydroxy-2-[(3-methoxy-3-oxopropanoyl)oxy]-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl}-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl 1-methyl propanedioate

C38H34O18 (778.1745064)


   

1-[(1s,2s,5s,9s,13r,14r,15s)-15-hydroxy-5-methyl-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadeca-6,10-dien-6-yl]-5-methyl-4-methylidenehexan-1-one

1-[(1s,2s,5s,9s,13r,14r,15s)-15-hydroxy-5-methyl-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadeca-6,10-dien-6-yl]-5-methyl-4-methylidenehexan-1-one

C27H38O3 (410.2820798)


   

(1r,3ar,5as,7s,9ar,9bs,11ar)-9a-(hydroxymethyl)-11a-methyl-1-[(1z)-5-methyl-4-methylidenehex-1-en-1-yl]-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

(1r,3ar,5as,7s,9ar,9bs,11ar)-9a-(hydroxymethyl)-11a-methyl-1-[(1z)-5-methyl-4-methylidenehex-1-en-1-yl]-1h,2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

C27H42O2 (398.3184632)


   

5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadec-10-en-15-ol

5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadec-10-en-15-ol

C27H40O2 (396.302814)


   

5-hydroxy-2-methyl-2,3-dihydro-1-benzopyran-4-one

5-hydroxy-2-methyl-2,3-dihydro-1-benzopyran-4-one

C10H10O3 (178.062991)


   

(5s)-3-[(1s,2s,4ar,6s,8as)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-5-[(1r)-1-hydroxyethyl]-1-methylpyrrolidine-2,4-dione

(5s)-3-[(1s,2s,4ar,6s,8as)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-5-[(1r)-1-hydroxyethyl]-1-methylpyrrolidine-2,4-dione

C21H31NO4 (361.22529660000004)


   

(1e,3as,5as,7r,9r,9as,9bs,11as)-9a,11a-dimethyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthrene-7,9-diol

(1e,3as,5as,7r,9r,9as,9bs,11as)-9a,11a-dimethyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthrene-7,9-diol

C27H42O2 (398.3184632)


   

(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-7,8-dihydroxy-2-[(3-methoxy-3-oxopropanoyl)oxy]-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl 1-methyl propanedioate

(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-7,8-dihydroxy-2-[(3-methoxy-3-oxopropanoyl)oxy]-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl 1-methyl propanedioate

C38H34O18 (778.1745064)


   

(1e,3as,5as,7s,9ar,9bs,11as)-9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

(1e,3as,5as,7s,9ar,9bs,11as)-9a-(hydroxymethyl)-11a-methyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthren-7-ol

C27H42O2 (398.3184632)


   

(3r,5s)-3-[(1s,2s,4ar,6s,8as)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-5-[(1r)-1-hydroxyethyl]-1-methylpyrrolidine-2,4-dione

(3r,5s)-3-[(1s,2s,4ar,6s,8as)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-5-[(1r)-1-hydroxyethyl]-1-methylpyrrolidine-2,4-dione

C21H31NO4 (361.22529660000004)


   

9a,11a-dimethyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthrene-7,9-diol

9a,11a-dimethyl-1-(5-methyl-4-methylidenehexylidene)-2h,3h,3ah,5h,5ah,6h,7h,8h,9h,9bh,10h,11h-cyclopenta[a]phenanthrene-7,9-diol

C27H42O2 (398.3184632)


   

(3ar,4r,6ar)-4-ethyl-3-methylidene-dihydro-3ah-furo[2,3-c]furan-2,6-dione

(3ar,4r,6ar)-4-ethyl-3-methylidene-dihydro-3ah-furo[2,3-c]furan-2,6-dione

C9H10O4 (182.057906)


   

(5r)-3-[(1r,2s,4as,6r,8ar)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-4-hydroxy-5-[(1r)-1-hydroxyethyl]-1-methyl-5h-pyrrol-2-one

(5r)-3-[(1r,2s,4as,6r,8ar)-1,2,6-trimethyl-4a,5,6,7,8,8a-hexahydro-2h-naphthalene-1-carbonyl]-4-hydroxy-5-[(1r)-1-hydroxyethyl]-1-methyl-5h-pyrrol-2-one

C21H31NO4 (361.22529660000004)


   

(1s,2r,3s,5r,10r,11r)-2-hydroxy-3-methyl-10-pentyl-7,13-dioxatetracyclo[7.5.2.0¹,¹¹.0⁵,⁹]hexadecane-6,8,12,14-tetrone

(1s,2r,3s,5r,10r,11r)-2-hydroxy-3-methyl-10-pentyl-7,13-dioxatetracyclo[7.5.2.0¹,¹¹.0⁵,⁹]hexadecane-6,8,12,14-tetrone

C20H26O7 (378.1678446)


   

2,3-dihydroxypropyl 2,4-dihydroxy-6-methylbenzoate

2,3-dihydroxypropyl 2,4-dihydroxy-6-methylbenzoate

C11H14O6 (242.0790344)


   

(1r,2r,5s,6e,9r,10r,13s,15s)-5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[8.7.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadecan-15-ol

(1r,2r,5s,6e,9r,10r,13s,15s)-5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[8.7.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadecan-15-ol

C27H42O2 (398.3184632)


   

2-({[(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-2-[(2-carboxy-2-ethylacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl]oxy}carbonyl)butanoic acid

2-({[(1ar,2r,2ar,9ar)-6-[(1ar,2r,2ar,9ar)-2-[(2-carboxy-2-ethylacetyl)oxy]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-6-yl]-7,8-dihydroxy-1a,2a-dimethyl-9-oxo-2h,9ah-oxireno[2,3-b]xanthen-2-yl]oxy}carbonyl)butanoic acid

C40H38O18 (806.2058048000001)


   

(1s,2s,5s,6e,9s,13r,14r,15s)-5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadec-10-en-15-ol

(1s,2s,5s,6e,9s,13r,14r,15s)-5-methyl-6-(5-methyl-4-methylidenehexylidene)-19-oxapentacyclo[12.3.2.0¹,¹³.0²,¹⁰.0⁵,⁹]nonadec-10-en-15-ol

C27H40O2 (396.302814)