1,2,3,6-Tetrahydro-4-methylphthalic anhydride

4-甲基四氢苯酐

Also known as: 4-Methyltetrahydrophthalic anhydride, 4-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride, cis-4-Methyl-1,2,3,6-tetrahydrophthalic anhydride, 5-Methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3a,4,7,7a-Tetrahydro-5-methyl-1,3-isobenzofurandione, 4-Methyl-Δ4-tetrahydrophthalic anhydride, Methyltetrahydrophthalic anhydride, MTHPA, NSC 52669

1,2,3,6-Tetrahydro-4-methylphthalic anhydride (CAS 3425-89-6) is a compound in the Aromatic Hydrocarbons 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-Methyltetrahydrophthalic anhydride, 4-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride and cis-4-Methyl-1,2,3,6-tetrahydrophthalic anhydride. Key properties include a melting point of 59-60°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.

3425-89-6

Jingsj CID

J-49118-3

Molecular Formula

C₉H₁₀O₃

Chinese Name

4-甲基四氢苯酐

Molecular Weight

166.174 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026