Exact Mass: 193.0418
Exact Mass Matches: 193.0418
Found 209 metabolites which its exact mass value is equals to given mass value 193.0418,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
L-Dopachrome
Dopachrome is a cyclization product of L-DOPA and is an intermediate in the biosynthesis of melanin. Dopaquinone has an ortho-quinone ring, which is known to be neurotoxic and highly reactive with many other compounds (PMID: 413870). Dopachrome spontaneously gives rise to 5,6-dihydroxyindole (DHI) or it can be enzymatically metabolized by dopachrome tautomerase to give 5,6-dihydroxyindole-2-carboxylic acid (DHICA). DHI and its oxidation products are also toxic to cells. Many Parkinsons patients are treated with L-DOPA. However, long-term treatment with L-DOPA may actually worsen symptoms or may result in neurotic and psychotic symptoms. These may be due to dopachrome and dopaquinone accumulating in the brain of L-DOPA treated patients (PMID: 19131041, PMID: 12373519). The non-decarboxylative tautomerization of L-dopachrome to 5,6-dihydroxyindole-2-carboxylic acid in the melanin biosynthetic pathway is catalyzed by Tyrosinase-related protein-2, a melanocyte-specific enzyme. (PMID 11095412) [HMDB]
5,6-Dihydroxyindole-2-carboxylic acid
5,6-Dihydroxyindole-2-carboxylic acid is an intermediate in the metabolism of Tyrosine. It is a substrate for Dopachrome tautomerase. [HMDB] 5,6-Dihydroxyindole-2-carboxylic acid is an intermediate in the metabolism of Tyrosine. It is a substrate for Dopachrome tautomerase.
3-Amino-4,7-dihydroxycoumarin
A hydroxycoumarin that is 4,7-dihydroxycoumarin bearing an additional amino substituent at positions 3.
D-Dopachrome
D-dopachrome is reversibly converted into 5,6-dihydroxyindole and carbon dioxide via the enzyme D-dopachrome decarboxylase (EC 4.1.1.84). Cultured human melanoma cells contain this enzyme as well as human liver (PMID: 8267597). Dopaquinone has an ortho-quinone ring, which is known to be neurotoxic and highly reactive with many other compounds (PMID: 413870). D-dopachrome is reversibly converted to 5,6-dihydroxyindole and carbon dioxide via the enzyme D-dopachrome decarboxylase (EC 4.1.1.84). (KEGG) Cultured human melanoma cells contain this enzyme as well as human liver. (PMID 8267597) [HMDB]
5,6-Dioxo-3,7-dihydro-2H-indole-2-carboxylic acid
methyl 5-(trifluoromethyl)-1H-pyrrole-2-carboxylate
Methyl 4-oxo-3-piperidinecarboxylate hydrochloride
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-6-carboxylic acid
3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZINE-5-CARBOXYLIC ACID
(R)-1-(2,5-Difluorophenyl)ethanamine hydrochloride
5-methyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidine-2-carboxylic acid
2,2,2-TRIFLUORO-1-(3-FLUOROPHENYL)ETHYLAMINE HYDROCHLORIDE
Methyl 2-oxo-2,3-dihydro-1,3-benzoxazole-6-carboxylate
1-(3-AMINO-4,6-DIMETHYLTHIENO[2,3-B]PYRIDIN-2-YL)ETHANONE
4-AMINOMETHYL-1-(4-METHOXY-PHENYL)-PYRROLIDIN-2-ONE
NATRIUM-3-(METHOXYCARBONYL)-2-OXO-1,2,5,6-TETRAHYDROPYRIDINE4-OLAAT
Methyl 4-oxopiperidine-3-carboxylate hydrochloride
4-Amino-1,1-dioxo-tetrahydro-2H-thiopyran-4-carboxylic acid
2-Methyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyriMidine-6-carboxylic acid
3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZINE-8-CARBOXYLIC ACID
7-OXO-5,6,7,8-TETRAHYDROPYRIDO[2,3-D]PYRIMIDINE-4-CARBOXYLIC ACID
5-Methyl-4-oxo-1,4-dihydropyrrolo[1,2-f][1,2,4]triazine-6-carboxylic acid
(S)-1-(2,6-Difluorophenyl)ethanamine hydrochloride
3-Amino-4-hydroxy-1H-pyrrolo[2,3-b]pyridine-2-carboxylic acid
1H-Pyrazole-4-carboxamide, 1-methyl-3-(trifluoromethyl)
Methyl 2-oxo-2,3-dihydro-1,3-benzoxazole-5-carboxylate
3-Oxo-3,4-dihydro-2H-1,4-benzoxazine-7-carboxylicacid
2-Chloro-6-ethyl-5-fluoro-4-hydroxy pyrimidine ammonium salt
ethyl 4-hydroxy-5H-pyrrolo[3,2-d]pyrimidine-7-carboxylate
(S)-1-(2,4-Difluorophenyl)ethanamine hydrochloride
D-Glucopyranuronic acid, ion(1-)
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beta-D-glucuronate
A D-glucopyranuronate that has beta configuration at the anomeric centre.
Aldehydo-L-iduronate
An iduronate that is the conjugate base of aldehydo-L-iduronic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3.
5-dehydro-D-Gluconate
A carbohydrate acid anion that is the conjugate base of 5-dehydro-D-gluconic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3.
2-Dehydro-D-gluconate
A keto-D-gluconate that is the conjugate base of 2-dehydro-D-gluconic acid, obtained by deprotonation of the carboxy group.
aldehydo-D-glucuronate
A D-glucuronate resulting from the deprotonation of the carboxy group of aldehydo-D-glucuronic acid; the major species at pH 7.3.
(2S,4R,5S)-2,4,5,6-tetrahydroxy-3-oxohexanoate
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beta-D-Galacturonate
A D-galactopyranuronate that has beta configuration at the anomeric centre.
5-dehydro-L-gluconate
A ketogluconate that is the conjugate base of 5-dehydro-L-gluconic acid, obtained by deprotonation of the carboxy group. Major microspecies at pH 7.3
(2S,3R,4S,5R)-3,4,5,6-tetrahydroxyoxane-2-carboxylate
alpha-D-Galacturonate
A carbohydrate acid anion that is the conjugate base of alpha-D-galacturonic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. D000074385 - Food Ingredients > D005503 - Food Additives > D010368 - Pectins
gamma-Thiomethyl glutamate
A glutamic acid derivative with a methylsulfanyl group at position 4.
3,4,5,6-Tetrahydroxy-tetrahydro-2H-pyran-2-carboxylate
(2R,3S,4S,5R)-3,4,5,6-tetrahydroxyoxane-2-carboxylate
(2S,3S,4S,5S)-3,4,5,6-tetrahydroxyoxane-2-carboxylate
(2R)-2-acetamido-3-[(R)-methylsulfinyl]propanoic acid
5,6-dihydroxyindole-2-carboxylic acid
A dihydroxyindole that is indole-2-carboxylic acid substituted by hydroxy groups at positions 5 and 6.
N-carboxy-L-methionine
A non-proteinogenic L-alpha-amino acid that is L-methionine in which one of the hydrogens attached to the amino group bas been replaced by a carboxy group.
D-galactopyranuronate
A carbohydrate acid anion that is the conjugate base of D-galactopyranuronic acid, obtained by deprotonation of the carboxy group.
D-glucopyranuronate
A carbohydrate acid anion that is the conjugate base of D-glucopyranuronic acid.
3-Dehydro-L-gulonate
The conjugate base of 3-dehydro-L-gulonic acid; major species at pH 7.3.
3,4,5,8-quinolinetetrol
A hydroxyquinoline that is quinoline substituted by hydroxy groups at positions 3, 4, 5, and 8.
