Exact Mass: 192.9951

Exact Mass Matches: 192.9951

Found 389 metabolites which its exact mass value is equals to given mass value 192.9951, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

L-Dopachrome

(2S)-2,3,5,6-Tetrahydro-5,6-dioxo-1H-indole-2-carboxylic acid

C9H7NO4 (193.0375)

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-Dihydroxy-1H-indole-2-carboxylic acid

C9H7NO4 (193.0375)

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

3-amino-4,7-dihydroxychromen-2-one

C9H7NO4 (193.0375)

A hydroxycoumarin that is 4,7-dihydroxycoumarin bearing an additional amino substituent at positions 3.

D-Dopachrome

(R)2,3,5,6-tetrahydro-5,6-dioxo--1H-Indole-2-carboxylic acid;D-Dopachrome

C9H7NO4 (193.0375)

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]

S-(Allylthio)-L-cysteine

2-Amino-3-(prop-2-en-1-yldisulphanyl)propanoic acid

C6H11NO2S2 (193.0231)

S-(Allylthio)-L-cysteine is found in onion-family vegetables. S-(Allylthio)-L-cysteine is isolated from garlic (Allium sativum). Potential nutriceutical. Isolated from garlic (Allium sativum). Potential nutriceutical. S-(Allylthio)-L-cysteine is found in garlic and onion-family vegetables.

Phosphocreatinine

[(4-hydroxy-1-methyl-2,5-dihydro-1H-imidazol-2-ylidene)amino]phosphonic acid

C4H8N3O4P (193.0252)

Phosphocreatinine is found in milk.

S-(2-Carboxyethyl)-L-cysteine

2-Amino-3-[(2-carboxyethyl)sulphanyl]propanoic acid

C6H11NO4S (193.0409)

5,6-Dioxo-3,7-dihydro-2H-indole-2-carboxylic acid

5,6-dioxo-3,5,6,7-tetrahydro-2H-indole-2-carboxylic acid

C9H7NO4 (193.0375)

S-Allylmercaptocysteine

(2R)-2-Amino-3-(prop-2-en-1-yldisulphanyl)propanoic acid

C6H11NO2S2 (193.0231)

S-allylmercaptocysteine, also known as samc cpd, is a member of the class of compounds known as L-cysteine-s-conjugates. L-cysteine-s-conjugates are compounds containing L-cysteine where the thio-group is conjugated. S-allylmercaptocysteine is slightly soluble (in water) and a moderately acidic compound (based on its pKa). S-allylmercaptocysteine can be found in soft-necked garlic, which makes S-allylmercaptocysteine a potential biomarker for the consumption of this food product.

trans-S-(1-Propenyl)-cysteine disulfide

(2R)-2-Amino-3-[(1E)-prop-1-en-1-yldisulphanyl]propanoic acid

C6H11NO2S2 (193.0231)

Trans-s-(1-propenyl)-cysteine disulfide is slightly soluble (in water) and a moderately acidic compound (based on its pKa). Trans-s-(1-propenyl)-cysteine disulfide can be found in soft-necked garlic, which makes trans-s-(1-propenyl)-cysteine disulfide a potential biomarker for the consumption of this food product.

Iridium

Ir (192.9629)

Iridium, also known as 77ir or iridio, is a member of the class of compounds known as homogeneous transition metal compounds. Homogeneous transition metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom. Iridium can be found in cucumber, which makes iridium a potential biomarker for the consumption of this food product. The most important iridium compounds in use are the salts and acids it forms with chlorine, though iridium also forms a number of organometallic compounds used in industrial catalysis, and in research. Iridium metal is employed when high corrosion resistance at high temperatures is needed, as in high-performance spark plugs, crucibles for recrystallization of semiconductors at high temperatures, and electrodes for the production of chlorine in the chloralkali process. Iridium radioisotopes are used in some radioisotope thermoelectric generators .

Erysolin