4-Methyl-1,2,3-thiadiazole-5-carboxylic acid

4-甲基-1,2,3-噻二唑-5-羧酸

Also known as: 4-Methyl-1,2,3-thiadiazole-5-carboxylic acid, 4-Methyl-1,2,3-thiodiazole-5-carboxylic acid, 4-Methyl-1,2,3-thiadiazole-5-c, 4-methyl-5-hydroxycarbonyl-1,2,3-thiadiazole, 4-methylthiadiazole-5-carboxylic acid, 5-carboxy-4-methyl-1,2,3-thiadiazole, Buttpark 30\06-41, IFLAB-BB F2630-0005, Labotest-BB LT00453848, MFCD00173830, Otava-BB BB7020410078, TimTec-BB SBB005418

4-Methyl-1,2,3-thiadiazole-5-carboxylic acid (CAS 18212-21-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H4N2O2S and a molecular weight of 144.152 g/mol. It is also known as 4-Methyl-1,2,3-thiodiazole-5-carboxylic acid, 4-Methyl-1,2,3-thiadiazole-5-c and 4-methyl-5-hydroxycarbonyl-1,2,3-thiadiazole. Key properties include a melting point of 166 °C, a boiling point of 315.2±34.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 144.4±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

18212-21-0

Jingsj CID

J-23486-3

Molecular Formula

C₄H₄N₂O₂S

Chinese Name

4-甲基-1,2,3-噻二唑-5-羧酸

Molecular Weight

144.152 g/mol

Category

Organic Acids

Last updated

8/21/2026