4,4-Dimethyldihydro-2H-pyran-2,6(3H)-dione

3,3-二甲基戊二酸酐

Also known as: 3,3-Dimethylglutaric anhydride, 4,4-Dimethyldihydro-2H-pyran-2,6(3H)-dione, 4,4-Dimethyloxane-2,6-dione, beta,beta-Dimethylglutaric anhydride, 2H-Pyran-2,6(3H)-dione, dihydro-4,4-dimethyl-

4,4-Dimethyldihydro-2H-pyran-2,6(3H)-dione (CAS 4160-82-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H10O3 and a molecular weight of 142.15200 g/mol. It is also known as 3,3-Dimethylglutaric anhydride, 4,4-Dimethyloxane-2,6-dione and beta,beta-Dimethylglutaric anhydride. Key properties include a melting point of 124-126 °C(lit.), a boiling point of 181 °C25 mm Hg(lit.), a density of 1.102g/cm3 and a flash point of 181°C/25mm. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

4160-82-1

Jingsj CID

J-1524794-2

Molecular Formula

C₇H₁₀O₃

Chinese Name

3,3-二甲基戊二酸酐

Molecular Weight

142.15200 g/mol

Category

Organic Acids

Last updated

8/21/2026