Exact Mass: 203.000077

Exact Mass Matches: 203.000077

Found 294 metabolites which its exact mass value is equals to given mass value 203.000077, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

Trifluoromethionine

C5H8F3NO2S (203.0227824)

Cystathionine ketimine

(5R)-2,5,6,7-tetrahydro-1,4-Thiazepine-3,5-dicarboxylic acid

C7H9NO4S (203.0252274)

D-cystathionine ketimine and L-cystathionine ketimine enhance superoxide generation by human neutrophils in a different manner. D-Cystathionine Ketimine enhanced seryl phosphorylation of 16. 5-kDa protein in human neutrophils, while L-Cystathionine Ketimine enhanced tyrosyl phosphorylation of 45-kDa protein.(PMID: 10049498). Among the cystathionine metabolites, cystathionine ketimine and N-acetyl-S-(3-oxo-3-carboxy-n-propyl) cysteine (NAc-OCPC) significantly enhanced the N-formylmethionylleucylphenylalanine (fMLP)-induced superoxide generation, but cystathionine, NAc-cystathionine, and cyclothionine did not enhance the superoxide generation. Cystathionine ketimine and NAc-OCPC also enhanced superoxide generation induced by opsonized zymosan (OZ) but not that induced by arachidonic acid (AA) and phorbol 12-myristate 13-acetate (PMA). Superoxide generation induced by cystathionine ketimine and NAc-OCPC was inhibited by genistein, an inhibitor of tyrosine kinase, and was enhanced by 1-(5-isoquinoline sulfonyl)-2-methylpiperazine (H-7), an inhibitor of protein kinase C.(PMID: 10708546) [HMDB] Cystathionine ketimine (CT) is a cyclic amino acid that was found to have a priming effect on superoxide generation in human neutrophils (PMID: 10708546). D-Cystathionine ketimine and L-cystathionine ketimine enhance superoxide generation by human neutrophils in two different manners. D-Cystathionine ketimine enhanced seryl phosphorylation of 16.5-kDa protein in human neutrophils, while L-cystathionine ketimine enhanced tyrosyl phosphorylation of 45-kDa protein (PMID: 10049498). Cystathionine ketimine was found in the urine of a cystathioninuria patient (PMID: 8373176).

3-Azido-7-hydroxycoumarin

3-azido-7-hydroxy-2H-chromen-2-one

C9H5N3O3 (203.03309000000002)

4-(2-Aminoethyl)benzenesulfonyl fluoride

4-(2-Aminoethyl) benzenesulfonyl fluoride hydrochloride

C8H10FNO2S (203.04162520000003)

D004791 - Enzyme Inhibitors > D011480 - Protease Inhibitors > D015842 - Serine Proteinase Inhibitors

Cytosine phosphate

7-amino-2,9,10-trioxa-4,6-diaza-1lambda5-phosphatricyclo[4.3.1.0^{3,8}]deca-3,7-diene-1,5-dione

C4H2N3O5P (202.9732092)

2-(2-Aminoethyl)benzenesulfonyl fluoride

2-(2-aminoethyl)benzene-1-sulfonyl fluoride

C8H10FNO2S (203.04162520000003)

trichlormethine

2,2,2-Trichlorotriethylamine hydrochloride

C6H12Cl3N (203.0035282)

Magnesium cyclamate

magnesium(2+) ion N-cyclohexylsulfamic acid

C6H13MgNO3S (203.0466608)

It is used as a food additive, prohibited .

(2R,3S)-2-methylisocitrate

(1R,2S)-1-Hydroxy-1-methylpropane-1,2,3-tricarboxylic acid

C7H7O7 (203.0191772)

(2r,3s)-2-methylisocitrate, also known as methylisocitric acid or (2s,3r)-3-hydroxybutane-1,2,3-tricarboxylate, belongs to tricarboxylic acids and derivatives class of compounds. Those are carboxylic acids containing exactly three carboxyl groups (2r,3s)-2-methylisocitrate is soluble (in water) and a weakly acidic compound (based on its pKa). (2r,3s)-2-methylisocitrate can be found in a number of food items such as green zucchini, cinnamon, fig, and nanking cherry, which makes (2r,3s)-2-methylisocitrate a potential biomarker for the consumption of these food products.

4-(2-Aminoethyl)benzenesulfonyl fluoride

C8H10FNO2S (203.04162520000003)

D004791 - Enzyme Inhibitors > D011480 - Protease Inhibitors > D015842 - Serine Proteinase Inhibitors

CONFIDENCE standard compound; INTERNAL_ID 4067

methyl 4-bromo-1H-pyrrole-2-carboxylate

C6H6BrNO2 (202.9581876)

2,3-Pyridinedicarbonyl dichloride

C7H3Cl2NO2 (202.95408380000003)

4-bromo-1-methyl-1H-pyrrole-2-carboxylic acid

C6H6BrNO2 (202.9581876)

1,N2-6-Oxo-malondialdehyde-guanine

C8H5N5O2 (203.04432300000002)

Clonidine Metabolite V

C7H7Cl2N3 (203.0017002)

4-AMINOETHYLBENZENESULFONYL FLUORIDE

C8H10FNO2S (203.04162520000003)

Trichlormethine

C6H12Cl3N (203.0035282)

D000970 - Antineoplastic Agents > D018906 - Antineoplastic Agents, Alkylating > D009588 - Nitrogen Mustard Compounds C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C2842 - DNA Binding Agent

Cystathionine ketimine

C7H9NO4S (203.0252274)

A 1-thia-4-azacyclohepta-3-ene-3,5-dicarboxylic acid that has R-configuration. It is cyclic sulfur-containing imino acid detected in bovine brain extracts.