3-Methylquinoxaline-2-carboxylic Acid

3-Methylquinoxaline-2-carboxylic acid (MQCA) is a major metabolite of olaquindox, an antibiotic and swine growth regulator. It induces cell cycle arrest at the S phase and is toxic to Chang liver cells in a concentration- and time-dependent manner. MQCA has been used as a marker of olaquindox use in livestock applications.Formal Name: 3-methyl-2-quinoxalinecarboxylic acid. CAS Number: 74003-63-7. Synonyms: MQCA. Molecular Formula: C10H8N2O2. Formula Weight: 188.2. Purity: >98%. Formulation: (Request formulation change), A neat oil. Solubility: DMF: 25 mg/mL, DMSO: 30 mg/mL, DMSO:PBS (pH 7.2) (1:10): 0.1 mg/mL, Ethanol: 25 mg/mL. lambdamax: 236, 317, 477 nm. SMILES: CC1=NC2=CC=CC=C2N=C1C(O)=O. InChi Code: InChI=1S/C10H8N2O2/c1-6-9(10(13)14)12-8-5-3-2-4-7(8)11-6/h2-5H,1H3,(H,13,14). InChi Key: BJPNADFNSANIPF-UHFFFAOYSA-N.