CAS: 18212-21-0 Molecular Formula: C4H3N2O2S Molecular Weight (g/mol): 143.14 MDL Number: MFCD00173830 InChI Key: NHHQOYLPBUYHQU-UHFFFAOYSA-M Synonym: 4-methyl-1,2,3-thiadiazole-5-carboxylic acid,4-methyl-1,2,3 thiadiazole-5-carboxylic acid,1,2,3-thiadiazole-5-carboxylic acid, 4-methyl,pubchem10092,acmc-209xfo,4-methyl-1,2,3-thiadiazole-5-carboxylicacid,tos-bb-0050,4-methyl-1,2,3 thiadiazol-5-carboxylic acid,4-methyl-5-hydroxycarbonyl-1,2,3-thiadiazole,4methyl-1,2,3 thiadiazole-5-carboxylic acid PubChem CID: 1381992 IUPAC Name: 4-methylthiadiazole-5-carboxylic acid SMILES: CC1=C(SN=N1)C([O-])=O