3-Mercaptoisobutyric acid

3-巯基异丁酸

Also known as: 3-Mercapto-2-methylpropanoic acid, 3-Mercapto-2-methylpropionic acid, Captopril EP Impurity C, Captopril impurity C, 2-Methyl-3-sulfanylpropanoic acid, 2-(Mercaptomethyl)propanoic acid, Propanoic acid, 3-mercapto-2-methyl-, (2RS)-2-Methyl-3-sulphanylpropanoic acid

3-Mercaptoisobutyric acid (CAS 26473-47-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H8O2S and a molecular weight of 120.170 g/mol. It is also known as 3-Mercapto-2-methylpropanoic acid, 3-Mercapto-2-methylpropionic acid and Captopril EP Impurity C. Key properties include a boiling point of 232.5±23.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 94.4±22.6 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

26473-47-2

Jingsj CID

J-3947-3

Molecular Formula

C₄H₈O₂S

Chinese Name

3-巯基异丁酸

Molecular Weight

120.170 g/mol

Category

Organic Acids

Last updated

8/21/2026