3-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride

3-甲基-4-环己烯-1,2-二甲酸酐

Also known as: 4-Methyl-1,2,3,6-tetrahydrophthalic anhydride, 3-Methyltetrahydrophthalic anhydride, 4-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 4-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride, MTHPA, 3-Methyl-1,2,3,6-tetrahydrophthalic anhydride, Maleic anhydride and 1,3-pentadiene adduct, 4-MTHPA

3-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride (CAS 5333-84-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O3 and a molecular weight of 166.174 g/mol. It is also known as 4-Methyl-1,2,3,6-tetrahydrophthalic anhydride, 3-Methyltetrahydrophthalic anhydride and 4-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione. Key properties include a melting point of 62°C, a boiling point of 303.0±41.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 142.9±24.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

5333-84-6

Jingsj CID

J-49120-6

Molecular Formula

C₉H₁₀O₃

Chinese Name

3-甲基-4-环己烯-1,2-二甲酸酐

Molecular Weight

166.174 g/mol

Category

Organic Acids

Last updated

8/21/2026