Exact Mass: 212.0408
Exact Mass Matches: 212.0408
Found 500 metabolites which its exact mass value is equals to given mass value 212.0408,
within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error
0.01 dalton.
Propyl gallate
Propyl gallate is found in corn. Propyl gallate is an antioxidant used in foods especially animal fats and vegetable oils. Synergistic with other antioxidants such as Butylated hydroxyanisole
Zonisamide
Zonisamide is a sulfonamide anticonvulsant approved for use as an adjunctive therapy in adults with partial-onset seizures. Zonisamide may be a carbonic anhydrase inhibitor although this is not one of the primary mechanisms of action. Zonisamide may act by blocking repetitive firing of voltage-gated sodium channels leading to a reduction of T-type calcium channel currents, or by binding allosterically to GABA receptors. This latter action may inhibit the uptake of the inhibitory neurotransmitter GABA while enhancing the uptake of the excitatory neurotransmitter glutamate. C78272 - Agent Affecting Nervous System > C264 - Anticonvulsant Agent D002317 - Cardiovascular Agents > D002121 - Calcium Channel Blockers D002491 - Central Nervous System Agents > D000927 - Anticonvulsants N - Nervous system > N03 - Antiepileptics > N03A - Antiepileptics D000077264 - Calcium-Regulating Hormones and Agents CONFIDENCE standard compound; EAWAG_UCHEM_ID 3132 D049990 - Membrane Transport Modulators
Questiomycin A
Questiomycin A, also known as 2-aminophenoxazin-3-one (APO), is found in mushrooms such as Calocybe gambosa (St Georges mushroom). 2-Aminophenoxazin-3-one is a benzoxazinoid metabolite. It was found excreted in the feces of rats that were fed a rye bread-based diet which makes this compound a potential fecal biomarker of whole grain intake (PMID: 23113707).
Eudesmic acid
3,4,5-trimethoxybenzoic acid is a benzoic acid derivative carrying 3-, 4- and 5-methoxy substituents. It has a role as a plant metabolite, a human xenobiotic metabolite and a human urinary metabolite. It is a member of benzoic acids and a member of methoxybenzenes. It is functionally related to a benzoic acid. It is a conjugate acid of a 3,4,5-trimethoxybenzoate. 3,4,5-Trimethoxybenzoic acid is a natural product found in Verbesina myriocephala, Engelhardia roxburghiana, and other organisms with data available. Eudesmic acid is found in olive. Eudesmic acid is isolated from eucalyptus oil etc. A benzoic acid derivative carrying 3-, 4- and 5-methoxy substituents. Isolated from eucalyptus oil etc. Eudesmic acid is found in olive. 3,4,5-Trimethoxybenzoic acid (Eudesmic acid;Trimethylgallic Acid) is a benzoic acid derivative. A building block in medicine and organic synthesis. 3,4,5-Trimethoxybenzoic acid (Eudesmic acid;Trimethylgallic Acid) is a benzoic acid derivative. A building block in medicine and organic synthesis.
Vanillactic acid
Vanillactic acid, also known as vanillactate or VLA, belongs to the class of organic compounds known as phenylpropanoic acids. Phenylpropanoic acids are compounds with a structure containing a benzene ring conjugated to a propanoic acid. Vanillactic acid is a potentially toxic compound. Vanillactic acid has been linked to the inborn metabolic disorders including aromatic l-amino acid decarboxylase deficiency. Vanillactic acid is an acidic catecholamine metabolite present in normal human urine (PMID 7524950), in normal human CSF (PMID 7914240), and increased in the CSF of newborns with neonatal epileptic encephalopathy mimicking aromatic L-amino acid decarboxylase deficiency (PMID 12200739). Vanillactic acid is an acidic catecholamine metabolite present in normal human urine (PMID 7524950), in normal human CSF (PMID 7914240), and increased in the CSF of newborns with neonatal epileptic encephalopathy mimicking aromatic L-amino acid decarboxylase deficiency (PMID 12200739) [HMDB]
3,4-Dihydroxyphenyllactic acid methyl ester
3,4-Dihydroxyphenyllactic acid methyl ester is a polyphenol metabolite detected in biological fluids (PMID: 20428313). A polyphenol metabolite detected in biological fluids [PhenolExplorer]
Urolithin B
Urolithin B is a secondary metabolite of ellagic acid which may be glucuronidated by liver enzymes during phase II metabolism. A polyphenol metabolite detected in biological fluids [PhenolExplorer] Urolithin B is one of Ellagitannins' slow microbial products, and has anti-inflammatory and anti-inflammatory effects. Urolithin B suppresses NF-κB activity. Urolithin B suppresses JNK, ERK and Akt's oxidation, and increases AMPK's oxidation. Urolithin B is also a quantitative change factor for bone and skin quality[1][2][3][4]. Urolithin B is one of the gut microbial metabolites of ellagitannins, and has anti-inflammatory and antioxidant effects. Urolithin B inhibits NF-κB activity by reducing the phosphorylation and degradation of IκBα, and suppresses the phosphorylation of JNK, ERK, and Akt, and enhances the phosphorylation of AMPK. Urolithin B is also a regulator of skeletal muscle mass[1][2]. Urolithin B is one of Ellagitannins' slow microbial products, and has anti-inflammatory and anti-inflammatory effects. Urolithin B suppresses NF-κB activity. Urolithin B suppresses JNK, ERK and Akt's oxidation, and increases AMPK's oxidation. Urolithin B is also a quantitative change factor for bone and skin quality[1][2][3][4]. Urolithin B is one of the gut microbial metabolites of ellagitannins, and has anti-inflammatory and antioxidant effects. Urolithin B inhibits NF-κB activity by reducing the phosphorylation and degradation of IκBα, and suppresses the phosphorylation of JNK, ERK, and Akt, and enhances the phosphorylation of AMPK. Urolithin B is also a regulator of skeletal muscle mass[1][2].
2-Hydroxyxanthone
2-Hydroxyxanthone belongs to the class of organic compounds known as xanthones. These are polycyclic aromatic compounds containing a xanthene moiety conjugated to a ketone group at carbon 9. Xanthene is a tricyclic compound made up of two benzene rings linearly fused to each other through a pyran ring. 2-Hydroxyxanthone exists as a solid and is considered to be practically insoluble (in water) and relatively neutral. Within the cell, 2-hydroxyxanthone is primarily located in the membrane (predicted from logP). Outside of the human body, 2-hydroxyxanthone can be found in fruits, herbs and spices, and mammee apple. This makes 2-hydroxyxanthone a potential biomarker for the consumption of these food products. Constituent of Hypericum subspecies, Mammea americana (mamey). 2-Hydroxyxanthone is found in herbs and spices, fruits, and mammee apple.
2,3-Dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone
2,3-Dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone is found in alcoholic beverages. 2,3-Dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone is a constituent of Riesling wine. Constituent of Riesling wine. 2,3-Dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone is found in alcoholic beverages.
4-Hydroxyxanthone
4-Hydroxyxanthone is found in fruits. 4-Hydroxyxanthone is from seeds of Mammea americana (mamey). From seeds of Mammea americana (mamey). 4-Hydroxyxanthone is found in fruits.
1-(Methylsulfinyl)propyl propyl disulfide
1-(Methylsulfinyl)propyl propyl disulfide is found in onion-family vegetables. 1-(Methylsulfinyl)propyl propyl disulfide is a constituent of Allium cepa (onion) juice and Allium tricoccum (wood leek). Constituent of Allium cepa (onion) juice and Allium tricoccum (wood leek). 1-(Methylsulfinyl)propyl propyl disulfide is found in garden onion and onion-family vegetables.
Methyl 1-(propylsulfinyl)propyl disulfide
Methyl 1-(propylsulfinyl)propyl disulfide is found in onion-family vegetables. Methyl 1-(propylsulfinyl)propyl disulfide is a constituent of Allium sp Constituent of Allium species Methyl 1-(propylsulfinyl)propyl disulfide is found in onion-family vegetables.
3-(3,4-Dihydroxyphenyl)-2-methoxypropionic acid
3-(3,4-Dihydroxyphenyl)-2-methoxypropionic acid is a polyphenol metabolite detected in biological fluids (PMID: 20428313). A polyphenol metabolite detected in biological fluids [PhenolExplorer]
3-Hydroxy-4-methoxyphenyllactic acid
3-Hydroxy-4-methoxyphenyllactic acid is a polyphenol metabolite detected in biological fluids (PMID: 20428313). A polyphenol metabolite detected in biological fluids [PhenolExplorer]
beta-(2-Methoxyphenoxy)-lactic acid
beta-(2-Methoxyphenoxy)-lactic acid is a metabolite of guaifenesin. Guaifenesin INN or guaiphenesin, also glyceryl guaiacolate, is an expectorant drug sold over the counter and usually taken orally to assist the bringing up of phlegm from the airways in acute respiratory tract infections. (Wikipedia)
N-phosphocreatinate(2-)
N-phosphocreatinate(2-) is classified as a member of the Alpha amino acids. Alpha amino acids are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon). N-phosphocreatinate(2-) is considered to be soluble (in water) and acidic
4-Amino-1,8-naphthalimide
D000970 - Antineoplastic Agents > D000067856 - Poly(ADP-ribose) Polymerase Inhibitors D004791 - Enzyme Inhibitors
Methyl syringate
Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3]. Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3].
N,N-dihydroxy-L-tyrosine
N,n-dihydroxy-l-tyrosine is slightly soluble (in water) and a weakly acidic compound (based on its pKa). N,n-dihydroxy-l-tyrosine can be found in a number of food items such as mentha (mint), bilberry, red raspberry, and oxheart cabbage, which makes n,n-dihydroxy-l-tyrosine a potential biomarker for the consumption of these food products.
Propyl gallate
Propyl gallate appears as fine white to creamy-white crystalline powder. Odorless or with a faint odor. Melting point 150 °C. Insoluble in water. Slightly bitter taste.
N-propyl gallate is a trihydroxybenzoic acid.
Propyl Gallate is under investigation in clinical trial NCT01450098 (A Study of LY2484595 in Healthy Subjects).
Propyl gallate is a natural product found in Alchornea glandulosa, Mangifera indica, and Zea mays with data available.
Propyl gallate is found in corn. Propyl gallate is an antioxidant used in foods especially animal fats and vegetable oils. Synergistic with other antioxidants such as Butylated hydroxyanisole
Propyl gallate
Propyl gallate appears as fine white to creamy-white crystalline powder. Odorless or with a faint odor. Melting point 150 °C. Insoluble in water. Slightly bitter taste.
N-propyl gallate is a trihydroxybenzoic acid.
Propyl Gallate is under investigation in clinical trial NCT01450098 (A Study of LY2484595 in Healthy Subjects).
Propyl gallate is a natural product found in Alchornea glandulosa, Mangifera indica, and Zea mays with data available.
Propyl gallate is found in corn. Propyl gallate is an antioxidant used in foods especially animal fats and vegetable oils. Synergistic with other antioxidants such as Butylated hydroxyanisole
Se-Methylselenomethionine
A selenoamino acid that is selenomethionine in which the selanyl group has been methylated.
Methyl syringate
Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3]. Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3].
2-(3,4-Epoxy-1-butynyl)-5-(1,3-pentadiynyl)thiophene|2-<3,4-Epoxy-but-1-inyl>-5-but-1,3-diinyl-thiophen|2--5-<3.4-epoxy-butin-(1)-yl>-thiophen|2-[(5-penta-1,3-diynyl-thiophen-2-yl)-ethynyl]-oxirane|2-[5-(penta-1,3-diynyl)-thiophen-2-ylethynyl]-oxirane
2-(hydroxyprop-1-ynyl)-5-(5-hexen-3-yn-1-ynyl)-thiophene|3-(5-hex-5-ene-1,3-diynyl-thiophen-2-yl)-prop-2-yn-1-ol
Benzenepropanoic acid, alpha,3,4-trihydroxy-alpha-methyl-
2-formyl-3,5-dihydroxy-4-hydroxymethylbenzoic acid
4-[5-(1-hydroxyethyl)furan-2-yl]-4-oxobutanoic acid
2--5-<5-formyl-buten-(3)-in-(1)-yl>-thiophen|5-(5-but-3-en-1-ynyl-thiophen-2-yl)-pent-2-en-4-ynal
2,3-Dimethoxy-4-hydroxy-benzoesaeuremethylester|methyl 2,3-dimethoxy-4-hydroxybenzoate
(4S,5R,6S)-5,6-dihydroxy-5,6-dihydro-4H-cyclopenta[c]furan-4-acetic acid methyl ester|piscrocin C
2,4,5-Trimethoxybenzoic acid
2,4,5-Trimethoxybenzoic acid is a compound identified in purple perilla extracts. 2,4,5-Trimethoxybenzoic acid inhibits M1 macrophage phenotype-mediated inflammation in diabetes[1]. 2,4,5-Trimethoxybenzoic acid is a compound identified in purple perilla extracts. 2,4,5-Trimethoxybenzoic acid inhibits M1 macrophage phenotype-mediated inflammation in diabetes[1].
methyl (4aR,7S,7aS)-octahydro-3,5-dioxocyclopenta[c]pyran-7-carboxylate|torrilliolide
1H,6H-Pyrano[3,4-c]pyran-1,6-dione, 5-ethyl-3,4,5,8-tetrahydro-5-hydroxy-, (.+/-.)-
2-hydroxy-3-(4-hydroxy-2-methyl-phenoxy)-propionic acid|2-Hydroxy-3-(4-hydroxy-2-methyl-phenoxy)-propionsaeure
6-methoxy-4-methyl-1,3-dihydroisobenzofuran-1,5,7-triol
2-(1-propynyl)-5-(5,6-epoxyhex-3-yn-1-ynyl)-thiophene
LCIFXEQPXQVBGL-UHFFFAOYSA-N
Methyl 3-hydroxy-4,5-dimethoxybenzoate is a gallic acid derivant isolated from myricaria Laxiflora. Methyl 3-hydroxy-4,5-dimethoxybenzoate shows obvious antimicrobial activities. Methyl 3-hydroxy-4,5-dimethoxybenzoate shows fairly active for oxidation resistance in the presence of H2O2[1].
AI3-36426
Methyl syringate is a benzoate ester obtained by the formal condensation of carboxy group of syringic acid with methanol. It has a role as a plant metabolite. It is a benzoate ester, a dimethoxybenzene and a member of phenols. It is functionally related to a syringic acid. Methyl 4-hydroxy-3,5-dimethoxybenzoate is a natural product found in Buxus natalensis, Cestrum parqui, and other organisms with data available. A benzoate ester obtained by the formal condensation of carboxy group of syringic acid with methanol. Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3]. Methyl syringate, a chemical marker of asphodel monofloral honey, is an efficient phenolic mediator for bacterial and fungal laccases. Methyl syringate is a TRPA1 agonist[1][2][3].
asaronic acid
2,4,5-Trimethoxybenzoic acid is a methoxybenzoic acid. 2,4,5-Trimethoxybenzoic acid is a natural product found in Alpinia flabellata with data available. 2,4,5-Trimethoxybenzoic acid is a compound identified in purple perilla extracts. 2,4,5-Trimethoxybenzoic acid inhibits M1 macrophage phenotype-mediated inflammation in diabetes[1]. 2,4,5-Trimethoxybenzoic acid is a compound identified in purple perilla extracts. 2,4,5-Trimethoxybenzoic acid inhibits M1 macrophage phenotype-mediated inflammation in diabetes[1].
2,3-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one
urolithin B
Coumarins Urolithin B is one of Ellagitannins' slow microbial products, and has anti-inflammatory and anti-inflammatory effects. Urolithin B suppresses NF-κB activity. Urolithin B suppresses JNK, ERK and Akt's oxidation, and increases AMPK's oxidation. Urolithin B is also a quantitative change factor for bone and skin quality[1][2][3][4]. Urolithin B is one of the gut microbial metabolites of ellagitannins, and has anti-inflammatory and antioxidant effects. Urolithin B inhibits NF-κB activity by reducing the phosphorylation and degradation of IκBα, and suppresses the phosphorylation of JNK, ERK, and Akt, and enhances the phosphorylation of AMPK. Urolithin B is also a regulator of skeletal muscle mass[1][2]. Urolithin B is one of Ellagitannins' slow microbial products, and has anti-inflammatory and anti-inflammatory effects. Urolithin B suppresses NF-κB activity. Urolithin B suppresses JNK, ERK and Akt's oxidation, and increases AMPK's oxidation. Urolithin B is also a quantitative change factor for bone and skin quality[1][2][3][4]. Urolithin B is one of the gut microbial metabolites of ellagitannins, and has anti-inflammatory and antioxidant effects. Urolithin B inhibits NF-κB activity by reducing the phosphorylation and degradation of IκBα, and suppresses the phosphorylation of JNK, ERK, and Akt, and enhances the phosphorylation of AMPK. Urolithin B is also a regulator of skeletal muscle mass[1][2].
Propane, 1,1,1,3,3-pentafluoro-2-(fluoromethoxy)-3-methoxy- (Compound B)
2-(2,2,2-TRIFLUORO-1-TRIFLUOROMETHYLETHOXY)-ETHANOL
2-(4,6-dimethylpyrimidin-2-yl)sulfanylpropanoic acid
5-Chloromethyl-3-(4-fluoro-phenyl)-[1,2,4]oxadiazole
4-METHYL-2,3-DIHYDRO-1H-PYRROLO[3,4-C]QUINOLINE-1,3-DIONE
3-(morpholin-4-ylcarbonyl)thiophen-2-amine(SALTDATA: FREE)
3-(CHLOROMETHYL)-1-METHYL-5-THIEN-2-YL-1H-PYRAZOLE
2,2,2-TRIFLUORO-1-PYRIDIN-3-YL-ETHYL-AMMONIUM, CHLORIDE
Ethyl 6,7-dihydro-4H-thieno[3,2-c]pyran-2-carboxylate
2H-1,5-Benzodioxepin-2-carbonyl chloride, 3,4-dihydro
4,4,4-trifluoro-3-(trifluoromethyl)butane-1,3-diol
4-methyl-2-morpholin-4-yl-1,3-thiazole-5-carbaldehyde
Ethyl 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carboxylate
Ethyl 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-3-carboxylate
5,8-DIFLUORO-7-METHOXY-3,4-DIHYDRONAPHTHALEN-1(2H)-ONE
7-METHYL-1,1-DIOXO-1,4-DIHYDRO-2H-1LAMBDA6-BENZO[1,2,4]THIADIAZIN-3-ONE
Thieno[3,2-c]pyridine-3-carboxylic acid, 2-amino-4,5,6,7-tetrahydro-5-methyl- (9CI)
1H-2,1,3-Benzothiadiazin-4(3H)-one,7-methyl-,2,2-dioxide(9CI)
Ethyl 4-methyl-2-(methylthio)pyrimidine-5-carboxylate
3,4-dihydro-2h-1,5-benzodioxepine-6-carbonyl chloride
(4-(Trifluoromethyl)phenyl)hydrazine hydrochloride
4-Hydroxy-4-(trifluoromethyl)cyclohexanecarboxylic acid
(4-METHYL-2-OXO-2H-CHROMEN-7-YLOXY)-ACETICACIDHYDRAZIDE
4-Thien-2-yltetrahydro-2H-pyran-4-carboxylic acid 97
3-Pyridinemethanamine, 4-(trifluoromethyl)-, hydrochloride (1:1)
2-amino-4,6-bis(methylsulfanyl)pyrimidine-5-carbonitrile
N1-(4-CHLORO-2-METHYLPHENYL)-2-HYDROXYIMINOACETAMIDE
D-Galactopyranuronic acid hydrate (1:1)
D-Galacturonic acid hydrate is an endogenous metabolite. D-Galacturonic acid hydrate is an endogenous metabolite.
3,4-dihydro-2h-1,5-benzodioxepine-7-carbonyl chloride
Methyl imidazo[1,2-a]pyridine-6-carboxylate hydrochloride
ethyl 5,7-dihydro-4H-thieno[2,3-c]pyran-3-carboxylate
2-[2-AMINO-4-(TRIFLUOROMETHYL)THIAZOL-5-YL]ETHANOL
1H-INDAZOLE-7-CARBOXYLIC ACID,METHYL ESTER,HYDROCHLORIDE
ETHYL 4,5,6,7-TETRAHYDROTHIAZOLO[5,4-C]PYRIDINE-2-CARBOXYLATE
methyl 7-fluoro-2,3-dihydro-1,4-benzodioxine-5-carboxylate
(2-(TRIFLUOROMETHYL)PYRIDIN-4-YL)METHANAMINE HYDROCHLORIDE
Methyl 2-amino-4,5,6,7-tetrahydrobenzo[d]thiazole-6-carboxylate
3-(chloromethyl)-5-(4-fluorophenyl)-1,2,4-oxadiazole
3,3,3-TRIFLUORO-(2-TETRAHYDROFURANYLMETHYL)PROPIONIC ACID
2-(6-fluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile
(2S,4S)-4-(thiazol-4-ylMethyl)pyrrolidine-2-carboxylic acid
5-(CHLOROMETHYL)-1-METHYL-3-THIEN-2-YL-1H-PYRAZOLE
1-Cyclohexene-1-carbonyl chloride, 4-(trifluoromethyl)- (9CI)
6-chloro-3,4-dihydro-2H-chromene-2-carboxylic acid
1-(ethoxy-(ethylsulfanylmethyl)phosphoryl)oxyethane
3-(chloromethyl)-5-(2-fluorophenyl)-1,2,4-oxadiazole
3-(chloromethyl)-5-(3-fluorophenyl)-1,2,4-oxadiazole
(3-(Trifluoromethyl)phenyl)hydrazine hydrochloride
5-Oxo-1-(1,3-thiazol-2-yl)pyrrolidine-3-carboxylic acid
[(2R)-3-[acetyl(hydroxy)amino]-2-hydroxypropyl]phosphonic acid
2,2,3,3-tetrafluoro-N-(1H-1,2,4-triazol-5-yl)propanamide
4-Hydroxy-7-methoxy-1,3-benzodioxole-5-carboxylic acid
(2E,4Z,7E)-2-hydroxy-6-oxonona-2,4,7-trienedioic acid
zonisamide
C78272 - Agent Affecting Nervous System > C264 - Anticonvulsant Agent D002317 - Cardiovascular Agents > D002121 - Calcium Channel Blockers D002491 - Central Nervous System Agents > D000927 - Anticonvulsants N - Nervous system > N03 - Antiepileptics > N03A - Antiepileptics D000077264 - Calcium-Regulating Hormones and Agents D049990 - Membrane Transport Modulators
4-AMINO-1,8-NAPHTHALIMIDE
D000970 - Antineoplastic Agents > D000067856 - Poly(ADP-ribose) Polymerase Inhibitors D004791 - Enzyme Inhibitors
Se-methyl-D-selenomethionine
A Se-methylselenomethionine that has D-configuration.
Se-methyl-L-selenomethionine
A Se-methylselenomethionine that has L-configuration.
1,6-Dihydroxyphenazine
A member of the class of phenazines that is phenazine substituted by hydroxy groups at positions 1 and 6.
Se-methyl-L-selenomethionine(1+)
An alpha-amino-acid cation resulting from the transfer of a proton from the carboxy to the amino group of Se-methyl-L-selenomethionine. Major species at pH 7.3
