Exact Mass: 193.0487
Exact Mass Matches: 193.0487
Found 500 metabolites which its exact mass value is equals to given mass value 193.0487,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
Gentioflavin
Gentioflavine is a delta-lactone.
Phenylacetylglycine
Phenylacetylglycine is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction:. acyl-CoA + glycine < -- > CoA + N-acylglycine. Phenylacetylglycine or PAG is a glycine conjugate of phenylacetic acid. Phenylacetic acid may arise from exposure to styrene (plastic) or through the consumption of fruits and vegetables. Phenylacetic acid is used in some perfumes, possessing a honey-like odour in low concentrations, and is also used in penicillin G production. PAG is a putative biomarker of phospholipidosis. Urinary PAG is elevated in animals exhibiting abnormal phospholipid accumulation in many tissues and may thus be useful as a surrogate biomarker for phospholipidosis. (PMID: 15764292) The presence of phenylacetylglycine in urine has been confirmed for dogs, rats and mice. However, the presence of this compound in human urine is controversial. GC-MS studies have not found this compound (PMID: 7492634) while NMR studies claimed to have identified it (PMID: 21167146). It appears that phenylacetylglycine may sometimes be mistaken for phenylacetylglutamine via NMR. Phenylacetylglycine is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction: Phenylacetylglycine is a gut microbial metabolite that can activate β2AR. Phenylacetylglycine protects against cardiac injury caused by ischemia/reperfusion[1]. Phenylacetylglycine is a gut microbial metabolite that can activate β2AR. Phenylacetylglycine protects against cardiac injury caused by ischemia/reperfusion[1].
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.
5,6-dihydroxy-3-methyl-5,6-dihydroquinolin-2(1H)-one
Cichorine
A member of the class of isoindoles that is 6-hydroxy-4-methoxy-5-methyl-2,3-dihydro-1H-isoindol-1-one which is substituted at position 4, 5, and 6 by methoxy, methyl, and hydroxy groups, respectively. A secondary metabolite found in Aspergillus silvativus, Aspergillus nidulans and Alternaria cichorii, it is poisonous to Russian knapweed (Acroptilon repens).
3-Amino-4,7-dihydroxycoumarin
A hydroxycoumarin that is 4,7-dihydroxycoumarin bearing an additional amino substituent at positions 3.
4-Hydroxy-5-phenyltetrahydro-1,3-oxazin-2-one
4-Hydroxy-5-phenyltetrahydro-1,3-oxazin-2-one is a metabolite of felbamate. Felbamate (marketed under the brand name Felbatol by MedPointe) is an anti-epileptic drug used in the treatment of epilepsy. It is used to treat partial seizures (with and without generalization) in adults and partial and generalized seizures associated with Lennox-Gastaut syndrome in children. However, an increased risk of potentially fatal aplastic anemia and/or liver failure limit the drugs usage to severe refractory epilepsy. (Wikipedia)
Toxoflavin
A pyrimidotriazine that is 1,6-dimethyl-1,5,6,7-tetrahydropyrimido[5,4-e][1,2,4]triazine with oxo groups at positions 5 and 7.
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]
3-Carbamoyl-2-phenylpropionaldehyde
3-Carbamoyl-2-phenylpropionaldehyde is a metabolite of felbamate. Felbamate (marketed under the brand name Felbatol by MedPointe) is an anti-epileptic drug used in the treatment of epilepsy. It is used to treat partial seizures (with and without generalization) in adults and partial and generalized seizures associated with Lennox-Gastaut syndrome in children. However, an increased risk of potentially fatal aplastic anemia and/or liver failure limit the drugs usage to severe refractory epilepsy. (Wikipedia)
5-Fluoroindole-3-acetic acid
D006133 - Growth Substances > D010937 - Plant Growth Regulators > D007210 - Indoleacetic Acids
2-Methylhippuric acid
2-Methylhippuric acid is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases, the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction: acyl-CoA + glycine <--> CoA + N-acylglycine. 2-Methylhippuric acid is a metabolite of xylene which is an aromatic hydrocarbon widely used as a solvant. Its level can be measured in the urine of workers exposed to xylene (PMID:8689499). 2-Methylhippuric acid is an endogenous phenolic acid metabolite detected after the consumption of whole grain. Methylhippuric acid is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction: 2-(2-Methylbenzamido)acetic acid is a metabolite detected in urine.
m-Methylhippuric acid
m-Methylhippuric (m-MHA)acid is the principal metabolite of m-xylene. Most of the m-xylene inhaled by workers will be excreted in urine as m-MHA. [HMDB] m-Methylhippuric (m-MHA)acid is the principal metabolite of m-xylene. Most of the m-xylene inhaled by workers will be excreted in urine as m-MHA. COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
p-Methylhippuric acid
p-Methylhippuric (p-MHA)acid is the principal metabolite of p-xylene. Most of the p-xylene inhaled by workers will be excreted in urine as p-MHA. [HMDB] p-Methylhippuric (p-MHA)acid is the principal metabolite of p-xylene. Most of the p-xylene inhaled by workers will be excreted in urine as p-MHA.
Methyl hippurate
Methylhippuric acid is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction: acyl-CoA + glycine < -- > CoA + N-acylglycine. Methylhippuric acid is a metabolite of xylene which is an aromatic hydrocarbon widely used as a solvant. The amount of methylhippuric acid can be measured in urine of workers exposed to xylene (PMID 8689499). Methylhippuric acid is an acyl glycine. Acyl glycines are normally minor metabolites of fatty acids. However, the excretion of certain acyl glycines is increased in several inborn errors of metabolism. In certain cases the measurement of these metabolites in body fluids can be used to diagnose disorders associated with mitochondrial fatty acid beta-oxidation. Acyl glycines are produced through the action of glycine N-acyltransferase (EC 2.3.1.13) which is an enzyme that catalyzes the chemical reaction:
Methyl n-acetylanthranilate
Methyl n-acetylanthranilate is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]")
Betamipron
Betamipron is an artificial sweetene Artificial sweetener
Phosphocreatinine
Phosphocreatinine is found in milk.
4-Anilino-4-oxobutanoic acid
4-Anilino-4-oxobutanoic acid is a metabolite of vorinostat. Vorinostat or suberoylanilide hydroxamic acid (SAHA) is a member of a larger class of compounds that inhibit histone deacetylases (HDAC). Histone deacetylase inhibitors (HDI) have a broad spectrum of epigenetic activities. Vorinostat is marketed under the name Zolinza for the treatment of cutaneous T cell lymphoma (CTCL) when the disease persists, gets worse, or comes back during or after treatment with other medicines. (Wikipedia)
N-Formylphenylalanine
N-Formylphenylalanine, also known as OHC-Phe-OH, belongs to the class of organic compounds known as phenylalanine and derivatives. Phenylalanine and derivatives are compounds containing phenylalanine or a derivative thereof resulting from reaction of phenylalanine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. N-Formylphenylalanine has been identified in the human placenta (PMID: 32033212).
6-Hydroxymethylpterin
6-hydroxymethylpterin, also known as 2-amino-6-(hydroxymethyl)-4(1h)-pteridinone, belongs to pterins and derivatives class of compounds. Those are polycyclic aromatic compounds containing a pterin moiety, which consist of a pteridine ring bearing a ketone and an amine group to form 2-aminopteridin-4(3H)-one. 6-hydroxymethylpterin is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). 6-hydroxymethylpterin can be found in soy bean, which makes 6-hydroxymethylpterin a potential biomarker for the consumption of this food product.
5,6-Dioxo-3,7-dihydro-2H-indole-2-carboxylic acid
7-hydroxy-6-methoxy-3,4-dihydro-2H-isoquinolin-1-one
N-Benzoylalanine
An N-acylamino acid that is the N-benzoyl derivative of alanine.
actarit
C29629 - Combination Medication > C29634 - Antirheumatic Preparation D018501 - Antirheumatic Agents CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6156; ORIGINAL_PRECURSOR_SCAN_NO 6153 CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6166; ORIGINAL_PRECURSOR_SCAN_NO 6164 CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6183; ORIGINAL_PRECURSOR_SCAN_NO 6181 CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6180; ORIGINAL_PRECURSOR_SCAN_NO 6179 CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6189; ORIGINAL_PRECURSOR_SCAN_NO 6187 CONFIDENCE standard compound; INTERNAL_ID 1198; DATASET 20200303_ENTACT_RP_MIX504; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 6191; ORIGINAL_PRECURSOR_SCAN_NO 6190
6-Hydroxy-7-methoxy-3,4-dihydro-2H-isoquinolin-1-one
4-Hydroxy-1,2,3,4-tetrahydroquinoline-4-carboxylic acid
4-Nitroso-benzoesaeure-isopropylester|4-nitroso-benzoic acid isopropyl ester
N2-Acetylguanine
relative retention time with respect to 9-anthracene Carboxylic Acid is 0.279 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.278 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.270 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.271 N2-Acetylguanine is a C2-modified guanine. N2-Acetylguanine binds GR (guanine-guanine riboswitch) with an Kd value of 300 nM. N2-Acetylguanine modulate transcriptional termination. N2-Acetylguanine has the potential for the research of antimicrobial agent[1].
(E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enamide
Phenylacetylglycine
A N-acylglycine that is glycine substituted on nitrogen with a phenylacetyl group. Phenylacetylglycine is a gut microbial metabolite that can activate β2AR. Phenylacetylglycine protects against cardiac injury caused by ischemia/reperfusion[1]. Phenylacetylglycine is a gut microbial metabolite that can activate β2AR. Phenylacetylglycine protects against cardiac injury caused by ischemia/reperfusion[1].
METHYL HIPPURATE
A glycine derivative that is the methyl ester of hippuric acid.
3-Methylhippuric acid
CONFIDENCE standard compound; INTERNAL_ID 129 COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
2-Methylhippuric acid
2-(2-Methylbenzamido)acetic acid is a metabolite detected in urine.
S-(2-boronoethyl)-L-cysteine
L-cysteine substituted at sulfur by a 2-boronoethyl group. D004791 - Enzyme Inhibitors
methyl 5-(trifluoromethyl)-1H-pyrrole-2-carboxylate
1H-Cyclopenta[4,5]pyrrolo[2,3-e]benzimidazole(9CI)
3,4-Dihydro-2H-benzo[1,4]oxazine-7-carboxylic acid methyl ester
2-methyl-4-oxo-4,5,6,7-tetrahydro-1H-indole-3-carboxylic acid(SALTDATA: FREE)
Methyl 4-oxo-3-piperidinecarboxylate hydrochloride
1H-Benzimidazole-5-carboxamide,2,3-dihydro-2-thioxo-(9CI)
N-METHYL-2-(METHYLTHIO)-1H-BENZO[D]IMIDAZOL-1-AMINE
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
1-methyl-2-(1,3-thiazol-2-yl)imidazole-4-carbaldehyde
NATRIUM-3-(METHOXYCARBONYL)-2-OXO-1,2,5,6-TETRAHYDROPYRIDINE4-OLAAT
Methyl 4-oxopiperidine-3-carboxylate hydrochloride
(3-OXO-3,4-DIHYDRO-2H-BENZO[B][1,4]OXAZIN-6-YL)BORONIC ACID
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
1H-Benzimidazole-4-carboxamide,2,3-dihydro-2-thioxo-
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
2-Cyano-4-fluoro-6-methyl-benzoic acid methyl ester
1H-Pyrazole-4-carboxamide, 1-methyl-3-(trifluoromethyl)
(1-METHYL-3-THIEN-2-YL-1H-PYRAZOL-5-YL)METHYLAMINE 97
Thieno[2,3-c]pyridine-3-carbonitrile,2-amino-4,5,6,7-tetrahydro-6-methyl-
1-(2-Fluorophenyl)-3-methyl-4,5-2H-1,2,4-triazol-one
Benzene, 1-[(1R)-1-isothiocyanatoethyl]-3-methoxy- (9CI)
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
2-(2-(methylthio)pyrimidin-4-yl)-3-oxopropanenitrile
(4R,5S)-(+)-4-METHYL-5-PHENYL-1,3-OXAZOLIDINE-2-THIONE
(S)-1-(2,4-Difluorophenyl)ethanamine hydrochloride
D-Glucopyranuronic acid, ion(1-)
COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
5,7-Dimethylpyrimido[4,5-e][1,2,4]triazine-6,8-dione
p-Aminohippurate
A hippurate that is the conjugate base of p-aminohippuric acid, arising from deprotonation of the carboxy group. D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents
2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidine-5-carboxamide
Autoinducer-2
An organic anion that is a borate diester derived from a furanose and acts a universal signal molecule mediating intra- and interspecies communication among bacteria.
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
COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
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
(1-Methyl-4-oxo-2-imidazolidinylidene)phosphoramidic acid
Cremeomycin(1-)
A monocarboxylic acid anion that is the conjugate base of cremeomycin resulting from the deprotonation of the carboxy group; major species at pH 7.3.
(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.
