Exact Mass: 210.0748
Exact Mass Matches: 210.0748
Found 500 metabolites which its exact mass value is equals to given mass value 210.0748,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
1,3,7-trimethylurate
1,3,7-Trimethyluric acid is a methyl derivative of uric acid, found occasionally in human urine. 1,3,7-Trimethyluracil is one of the purine components in urinary calculi. Methylated purines originate from the metabolism of methylxanthines (caffeine, theophylline and theobromine). Methyluric acids are indistinguishable from uric acid by simple methods routinely used in clinical laboratories, requiring the use of high-performance liquid chromatography (HPLC). Purine derivatives in urinary calculi could be considered markers of abnormal purine metabolism. The content of a purine derivative in stone depends on its average urinary excretion in the general population, similarity to the chemical structure of uric acid, and content of the latter in stone. This suggests that purines in stones represent a solid solution with uric acid as solvent. It is also plausible that methylxanthines, ubiquitous components of the diet and drugs, are involved in the pathogenesis of urolithiasis. Caffeine is metabolized via successive pathways mainly catalyzed by CYP1A2, xanthine oxidase or N-acetyltransferase-2 to give 14 different metabolites. CYP1A2 activity shows an inter-individual variability among the population. CYP1A2, an isoform of the CYP1A cytochrome P450 super-family, is involved in the metabolism of many drugs and plays a potentially important role in the induction of chemical carcinogenesis. (PMID:11712316, 15833286, 3506820, 15013152).
Sinapyl alcohol
Sinapyl alcohol is an organic compound derived from cinnamic acid. This phytochemical is one of the monolignols. It is biosynthetized via the phenylpropanoid biochemical pathway, its immediate precursor being sinapaldehyde. Sinapyl alcohol is a precursor to lignin or lignans. It is also a biosynthetic precursor to various stilbenes and coumarins.[From Wiki].
Pyocyanin
An iminium betaine that is 5-methylphenazin-5-ium which is substituted at position 1 by an oxidanidyl group. An antibiotic pigment produced by Pseudomonas aeruginosa. CONFIDENCE standard compound; INTERNAL_ID 184 Pyocyanin (Pyocyanine) is a phenazine that is a toxic, quorum sensing (QS)-controlled metabolite produced by P. aeruginosa. Pyocyanin is a redox-active compound and promotes the generation of reactive oxygen species (ROS). Pyocyanin also possesses antibacterial properties and increases fitness in competition with other bacterial species[1].
L-galacto-2-Heptulose
L-galacto-2-Heptulose (CAS: 29325-35-7) is found in cereals and cereal products. L-galacto-2-Heptulose is isolated from leaves of Medicago sativa (alfalfa). Isolated from leaves of Medicago sativa (alfalfa). L-Galacto-2-heptulose is found in cereals and cereal products.
3-Methyl-1-(2,4,6-trihydroxyphenyl)-1-butanone
3-Methyl-1-(2,4,6-trihydroxyphenyl)-1-butanone is found in alcoholic beverages. 3-Methyl-1-(2,4,6-trihydroxyphenyl)-1-butanone is a constituent of Humulus lupulus (hops). Constituent of Humulus lupulus (hops). Phlorisovalerophenone is found in many foods, some of which are bitter gourd, breadfruit, devilfish, and pepper (c. chinense).
Multifidol
A butanone that is the 2-methylbutanoyl derivative of phloroglucinol.
Thiolactomycin
D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents
2-Aminoacridone
D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents > D049408 - Luminescent Agents D004396 - Coloring Agents > D005456 - Fluorescent Dyes
Crocose
Crocose, also known as D-altro-3-heptulose, is a member of the class of compounds known as heptoses. Heptoses are monosaccharides in which the sugar unit is a seven-carbon containing moeity. Crocose is soluble (in water) and a very weakly acidic compound (based on its pKa). Crocose can be found in saffron, which makes crocose a potential biomarker for the consumption of this food product.
D-manno-2-Heptulose
D-manno-2-Heptulose (CAS: 3615-44-9) is found in Persea gratissima (avocado) and Medicago sativa (alfalfa). D-Manno-2-heptulose is found in many foods, including fruits, cereals and cereal products, and opium poppy. Occurs in Persea gratissima (avocado) and Medicago sativa (alfalfa). D-Manno-2-heptulose is found in many foods, some of which are fruits, cereals and cereal products, avocado, and opium poppy. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3]. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3].
Bancroftinone
Bancroftinone is found in herbs and spices. Bancroftinone is isolated from clove oil. Isolated from clove oil. Bancroftinone is found in herbs and spices. Bancroftinone is an aromatic ketone. Bancroftinone, a natural product, belongs to the class of alkyl-phenylketones[1]. Bancroftinone, a natural product, belongs to the class of alkyl-phenylketones[1].
2'-Hydroxy-4',6'-dimethoxy-3'-methylacetophenone
2-Hydroxy-4,6-dimethoxy-3-methylacetophenone is found in fruits. 2-Hydroxy-4,6-dimethoxy-3-methylacetophenone is isolated from Java plum blossom (Eugenia jambolana). Isolated from Java plum blossom (Eugenia jambolana). Methylxanthoxylin is found in fruits.
D-altro-D-manno-Heptose
D-altro-D-manno-Heptose is found combined in bakers yeas D000970 - Antineoplastic Agents > D020032 - Tyrphostins
Sedoheptulose
Sedoheptulose (CAS: 3019-74-7) is a ketoheptose, a monosaccharide with seven carbon atoms and a ketone functional group. It is one of the few heptoses found in nature. Sedoheptulose is a seven-carbon ketose sugar originally found in Sedum spectabile, a common perennial garden plant. Later it was shown to be widely distributed in the plants of the Crassulaceae family. The Crassulaceae, or orpine family, is a family of dicotyledons. They store water in their succulent leaves. They are found worldwide, but mostly occur in the northern hemisphere and southern Africa, typically in dry and/or cold areas where water may be scarce. The family includes about 1,400 species in 33 genera. As a result, this sugar is often found to be part of the human diet. This sugar, D-sedoheptulose, is a significant intermediary compound in the cyclic regeneration of D-ribulose. It also plays an important role as a transitory compound in the cyclic regeneration of D-ribulose for carbon dioxide fixation in plant photosynthesis. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3]. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3].
3-(4-Hydroxy-3-methoxyphenyl)-2-methylpropionic acid
3-(4-Hydroxy-3-methoxyphenyl)-2-methylpropionic acid is a metabolite of carbidopa. Carbidopa (Lodosyn) is a drug given to people with Parkinsons disease in order to inhibit peripheral metabolism of levodopa. This property is significant in that it allows a greater proportion of peripheral levodopa to cross the blood brain barrier for central nervous system effect. (Wikipedia)
2-Methoxy-3-(4-methoxyphenyl)propanoic acid
2-Methoxy-3-(4-methoxyphenyl)propanoic acid is found in cereals and cereal products. 2-Methoxy-3-(4-methoxyphenyl)propanoic acid is a constituent of barley, rye and wheat grains, in an enantiomeric form. Constituent of barley, rye and wheat grains, prob. in an enantiomeric form. 2,4-Dimethoxyphloretic acid is found in cereals and cereal products.
1,3,9-Trimethyluric acid
1,3,9-Trimethyluric acid is found in coffee and coffee products. 1,3,9-Trimethyluric acid is present in roasted coffee beans and instant coffee, but not green coffee beans. Present in roasted coffee beans and instant coffee, but not green coffee beans. 1,3,9-Trimethyluric acid is found in coffee and coffee products.
5-(3',5')-Dihydroxyphenyl-gamma-valerolactone
5-(3,5)-Dihydroxyphenyl-gamma-valerolactone is a metabolite of grape juice or grapeseed. It is found in urine.
3,4-Dihydroxyphenylvaleric acid
3,4-Dihydroxyphenylvaleric acid is a common gut metabolite of Polyphenols (Isoflavones). A polyphenol metabolite detected in biological fluids [PhenolExplorer]
N-Carbamoyl-2-amino-2-(4-hydroxyphenyl)acetic acid
N-Carbamoyl-2-amino-2-(4-hydroxyphenyl)acetic acid is found in pulses. N-Carbamoyl-2-amino-2-(4-hydroxyphenyl)acetic acid is isolated from leaves of Vicia fab
2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol
2-Methoxy-4-(4-methyl-1,3-dioxolan-2-yl)phenol is present in food as an artifact arising from reaction of
N-(5-Amino-2-hydroxybenzoyl)glycine
N-(5-Amino-2-hydroxybenzoyl)glycine belongs to the class of organic compounds known as hippuric acids. These are compounds containing hippuric acid, which consists of a of a benzoyl group linked to the N-terminal of a glycine.
d-Glycero-d-galacto-heptose
D-glycero-d-galactoheptose is a member of the class of compounds known as heptoses. Heptoses are monosaccharides in which the sugar unit is a seven-carbon containing moeity. D-glycero-d-galactoheptose is soluble (in water) and a very weakly acidic compound (based on its pKa). D-glycero-d-galactoheptose can be found in avocado, which makes D-glycero-d-galactoheptose a potential biomarker for the consumption of this food product.
Arginine hydrochloride
Dietary supplement, nutrient. Arginine (abbreviated as Arg or R) is an alpha-amino acid. The L-form is one of the 20 most common natural amino acids. B - Blood and blood forming organs > B05 - Blood substitutes and perfusion solutions > B05X - I.v. solution additives > B05XB - Amino acids Dietary supplement, nutrient L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
1,2-Didehydro,2,3-dihydro (Z-)-(Z)-6-[4-(Methylthio)-1,2,3-pentatrienyl]-2H-pyran-2-one|1-2-Didehydro,2-3-dihydro (E-)-(E)-6-[4-(Methylthio)-1,2,3-pentatrienyl]-2H-pyran-2-one
7,8-Epoxy-2,3,5,6,7,8-hexahydro-6-hydroxy-2,2-dimethyl-4H-1-benzopyran-4-one
7,9-Dihydro-3,7,9-trimethyl-1H-purine-2,6,8(3H)-trione
3,4-dimethoxy-5-hydroxy-t-cinnamyl alcohol|3,4-dimethoxy-5-hydroxy-trans-cinnamyl alcohol|3-hydroxy-4,5-dimethoxycinnamyl alcohol
1-Propanone, 1-(2,6-dihydroxy-4-methoxyphenyl)-2-methyl-
8-hydroxy-2,2-dimethyl-5,6,7,8-tetrahydro-6,7-epoxychroman-4-one
rel-(2R,3R,7R,7aR)-2,3,7,7a-tetrahydro-3-hydroxy-7-methyl-2-[(1E)-prop-1-en-1-yl]-5H-furo[3,4-b]pyran-5-one|theissenolactone B
(S)-7-ethyl-4-methoxy-7,8-dihydropyrano[4,3-b]pyran-2(5H)-one|pyrenocine J
2-Hydroxypropionic acid 2-(p-hydroxyphenyl)ethyl ester
2,4-Dihydroxy-3-methoxymethyl-5-methylacetophenone
1-Acetyl-beta-carboline
A natural product found in Marinactinospora thermotolerans and Cordyceps sinensis.
3-allyl-3a,5,6,6a-tetrahydro-2,4,6a-trihydroxy-4H-pentalen-1-one|xialenon B
(2Xi,8R)-2-Aethyl-8-methyl-3,4-dihydro-2H,8H-furo[3,4-b]oxepin-5,6-dion|(2Xi,8R)-2-ethyl-8-methyl-3,4-dihydro-2H,8H-furo[3,4-b]oxepin-5,6-dione|2-ethyl-8-methyl-3,4-dihydro-2H,8H-furo[3,4-b]oxepine-5,6-dione|Terrestrinsaeure
1-(5-(HYDROXYMETHYL)-2,5-DIHYDROFURAN-2-YL)PYRIMIDINE-2,4(1H,3H)-DIONE
2,4-dihydroxy-6-methoxyl-methylene-3-methyl-acetophenone
3-(2,5-Dimethoxyphenyl)propanoic acid
A monocarboxylic acid that is 3-phenylpropionic acid in which the hydrogens at positions 2 and 5 of the phenyl ring are replaced by methoxy groups.
Ethyl everninate
2-hydroxy-4-methoxy-6-methylbenzoic acid ethyl ester is a methoxybenzoic acid. Benzoic acid, 2-hydroxy-4-methoxy-6-methyl-, ethyl ester is a natural product found in Evernia prunastri with data available.
Mannoheptulose
D-keto-manno-heptulose is the open chain form of D-manno-heptulose. D-Mannoheptulose is a natural product found in Papaver somniferum with data available. A 7-carbon keto sugar having the mannose configuration. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3]. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3].
Imidacloprid-guanidine
CONFIDENCE standard compound; INTERNAL_ID 2592 CONFIDENCE standard compound; EAWAG_UCHEM_ID 3059
4,7,7-Trimethyl-2,3-dioxo-bicyclo[2.2.1]heptane-1-carboxylic acid
3-methyl-1-(2,4,6-trihydroxyphenyl)butan-1-one
1,3,7-Trimethyluric acid
An oxopurine in which the purine ring is substituted by oxo groups at positions 2, 6, and 8, and the nitrogens at positions 1, 3, and 7 are substituted by methyl groups. It is a metabolite of caffeine.
sinapyl alcohol
A primary alcohol, being cinnamyl alcohol hydroxylated at C-4 and methoxylated at C-3 and -5. Sinapyl alcohol, also known as 4-(3-hydroxy-1-propenyl)-2,6-dimethoxy-phenol or 4-hydroxy-3,5-dimethoxycinnamyl alcohol, is a member of the class of compounds known as methoxyphenols. Methoxyphenols are compounds containing a methoxy group attached to the benzene ring of a phenol moiety. Sinapyl alcohol is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). Sinapyl alcohol can be found in a number of food items such as ginseng, endive, sea-buckthornberry, and white cabbage, which makes sinapyl alcohol a potential biomarker for the consumption of these food products. Sinapyl alcohol is an organic compound structurally related to cinnamic acid. It is biosynthetized via the phenylpropanoid biochemical pathway, its immediate precursor being sinapaldehyde. This phytochemical is one of the monolignols, which are precursor to lignin or lignans. It is also a biosynthetic precursor to various stilbenoids and coumarins .
5-aminosalicyluric acid
An N-acylglycine in which the acyl group is specified as 5-amino-2-hydroxybenzoyl.
Sanazin
Pyocyanin (Pyocyanine) is a phenazine that is a toxic, quorum sensing (QS)-controlled metabolite produced by P. aeruginosa. Pyocyanin is a redox-active compound and promotes the generation of reactive oxygen species (ROS). Pyocyanin also possesses antibacterial properties and increases fitness in competition with other bacterial species[1].
2-(carbamoylamino)-2-(4-hydroxyphenyl)acetic acid
Bancroftinone
Bancroftinone, a natural product, belongs to the class of alkyl-phenylketones[1]. Bancroftinone, a natural product, belongs to the class of alkyl-phenylketones[1].
2l5-1,3,2-Dioxaphosphole,2,2,2-trimethoxy-4,5-dimethyl-
1-(4-CHLOROPHENYL)-3-(2-HYDROXYPHENYL)PROPANE-1,3-DIONE
5,7-Dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid
1H-1,2,4-Triazole-3-carboxylicacid,5-[(cyclopropylcarbonyl)amino]-,methyl
5-Ethyl-4,5,6,7-tetrahydro-1-benzothiophene-2-carboxylic acid
4,5,6,7,8,9-Hexahydrocycloocta[b]thiophene-2-carboxylic acid
3-[2-(3-hydroxypropylsulfanyl)ethylsulfanyl]propan-1-ol
2-tert-butyl-6-chloro-[1,2,4]triazolo[1,5-b]pyridazine
2-(2,4-Dichlorophenoxy)-1-(2-Methyl-1-piperidyl)-1-propanone
3,4,8,9,12,13-hexaoxa-1,6-diazabicyclo[4.4.4]tetradecane
Dimethyl carbate
P - Antiparasitic products, insecticides and repellents > P03 - Ectoparasiticides, incl. scabicides, insecticides and repellents > P03B - Insecticides and repellents
Ethyl 4,5,6,7-tetrahydro-1-benzothiophene-2-carboxylate
3-(4-HYDROXY-3,5-DIMETHOXY-PHENYL)-PROPIONALDEHYDE
Benzoicacid,4-amino-3-methyl-5-nitro-,methylester(9CI)
Benzoic acid, 4-(1-aminoethyl)-3-nitro-, (R)- (9CI)
2-AMINO-6-METHYL-4,5,6,7-TETRAHYDRO-1-BENZOTHIOPHENE-3-CARBOXAMIDE
3-Pyridinecarbonitrile,1,2-dihydro-6-methyl-2-oxo-4-phenyl-
3-acetylamino-6-Methoxy-pyridine-2-carboxylic acid
6-Methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carbohydrazide
2-Amino-N-methyl-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxamide
N-[(2Z)-Piperazin-2-ylidene]trifluoroacetohydrazide
1H-Purine-2,6-dione,3,9-dihydro-8-(hydroxymethyl)-1,3-dimethyl-
1-vinyl-1H-imidazole-4,5-dicarboxylic acid dimethyl ester
5-(Aminomethyl)-3-(3-fluorophenyl)-2-oxazolidinone
ETHYL 4,5,6,7-TETRAHYDROBENZO[B]THIOPHENE-3-CARBOXYLATE
(4R,5R)-2-CHLORO-4,5-DIMETHYL-1,3,2-DIOXAPHOSPHOLANE2-OXIDE
9,9-DIMETHYL-3,7-DIAZABICYCLO[3.3.1]NONANE-2,4,6,8-TETRAONE
3-(4-Hydroxy-3-Imino-6-Oxo-Cyclohexa-1,4-Dienyl)-Alanine
(3S,5E)-3-propyl-3,4-dihydrothieno[2,3-f][1,4]oxazepin-5(2H)-imine
Arginine hydrochloride
B - Blood and blood forming organs > B05 - Blood substitutes and perfusion solutions > B05X - I.v. solution additives > B05XB - Amino acids L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
1,3,7-Trimethylurate
1,3,7-trimethyluric acid, also known as 8-oxy-caffeine or 137-trimethylate, is a member of the class of compounds known as xanthines. Xanthines are purine derivatives with a ketone group conjugated at carbons 2 and 6 of the purine moiety. 1,3,7-trimethyluric acid is soluble (in water) and a very weakly acidic compound (based on its pKa). 1,3,7-trimethyluric acid can be found in a number of food items such as devilfish, allium (onion), cocoa bean, and epazote, which makes 1,3,7-trimethyluric acid a potential biomarker for the consumption of these food products. 1,3,7-trimethyluric acid can be found primarily in blood, feces, and urine, as well as in human kidney and liver tissues. In humans, 1,3,7-trimethyluric acid is involved in the caffeine metabolism. Moreover, 1,3,7-trimethyluric acid is found to be associated with asthma. 1,3,7-Trimethyluric acid, also referred to as trimethyluric acid and 8-oxy-caffeine, is a purine alkaloid that is produced in some plants and occurs as a minor metabolite of caffeine in humans. The enzymes that metabolize caffeine into 1,3,7-trimethyluric acid in humans include CYP1A2, CYP2E1, CYP2C8, CYP2C9, and CYP3A4 .
N-(5-Amino-2-hydroxybenzoyl)glycine
N-(5-Amino-2-hydroxybenzoyl)glycine belongs to the class of organic compounds known as hippuric acids. These are compounds containing hippuric acid, which consists of a of a benzoyl group linked to the N-terminal of a glycine.
D-glycero-D-gulo-heptopyranose
An aldoheptose that is the D-glycero-diastereomer of D-gulo-heptopyranose
N-(5-methyl-1,3-thiazol-2-yl)cyclopentanecarboxamide
(2S)-2-acetamido-3-(1-methyl-1H-imidazol-4-yl)propanoate
3-Propyl-2,3-dihydrothieno[2,3-][1,4]oxazepin-5-amine
(2S)-2-acetamido-3-(1-methyl-1H-imidazol-5-yl)propanoate
1,3-Dimethyl-1,9A-dihydro-2H-pyrimido(1,2-A)(1,3,5)triazine-2,4,8(3H,9H)-trione
Arginine hydrochloride
B - Blood and blood forming organs > B05 - Blood substitutes and perfusion solutions > B05X - I.v. solution additives > B05XB - Amino acids L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis. L-Arginine hydrochloride ((S)-(+)-Arginine hydrochloride) is the nitrogen donor for synthesis of nitric oxide, a potent vasodilator that is deficient during times of sickle cell crisis.
D-Mannoheptulose
D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3]. D-Mannoheptulose is a major non-structural carbohydrate in avocado. D-mannoheptulose is a specific inhibitor of D-glucose phosphorylation. D-Mannoheptulose can block insulin release and utilization of carbohydrate in rat[1][2][3].
2-aminoacridone
D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents > D049408 - Luminescent Agents D004396 - Coloring Agents > D005456 - Fluorescent Dyes
6-(1,2-dihydroxyethyl)oxane-2,3,4,5-tetrol
D000970 - Antineoplastic Agents > D020032 - Tyrphostins
N-acetyl-3-methyl-L-histidinate
A monocarboxylic acid anion that is the conjugate base of N-acetyl-3-methyl-L-histidine, obtained by deprotonation of the carboxy group; major species at pH 7.3.
N-acetyl-1-methyl-L-histidinate
A monocarboxylic acid anion that is the conjugate base of N-acetyl-1-methyl-L-histidine, obtained by deprotonation of the carboxy group; major species at pH 7.3.
Methoxy-PEPy
Methoxy-PEPy is a potent and highly selective mGlu5 receptor antagonist with IC50 of 1 nM. IC50 value: 1 nM [1] Target: mGlu5R inhibitor Administration of [3H]methoxy-PEPy (50 microCi/kg i.v.) to mGlu5 receptor-deficient mice revealed binding at background levels in forebrain, whereas wild-type mice exhibited 14-fold higher binding in forebrain relative to cerebellum [2]. The calcium transients stimulated by these agonists were potently inhibited by reference allosteric mGlu5 antagonists - 2-methyl-6-(phenylethynyl)pyridine (MPEP), 3-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine (MTEP) and 3-methoxy-5-(pyridine-2-ylethynyl)pyridine (methoxy-PEPy) (IC(50) ranges: 0.8-66 nM) [3].
