5-Phenoxy-1,3-isobenzofurandione

4-苯氧基邻苯二甲酸酐

Also known as: 4-Phenoxyphthalic anhydride, 5-Phenoxy-2-benzofuran-1,3-dione, 5-Phenoxyisobenzofuran-1,3-dione, 1,3-Isobenzofurandione, 5-phenoxy-, 4-Phenoxy-phthalic acid anhydride, 5-Phenoxy-1,3-dihydro-2-benzofuran-1,3-dione, 4-Phenoxyphthalanhydrid, ROXA-014, Y6644

5-Phenoxy-1,3-isobenzofurandione (CAS 21345-01-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C14H8O4 and a molecular weight of 240.211 g/mol. It is also known as 4-Phenoxyphthalic anhydride, 5-Phenoxy-2-benzofuran-1,3-dione and 5-Phenoxyisobenzofuran-1,3-dione. Key properties include a melting point of 112-113ºC, a boiling point of 414.9±28.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 187.8±24.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

21345-01-7

Jingsj CID

J-1124403-5

Molecular Formula

C₁₄H₈O₄

Chinese Name

4-苯氧基邻苯二甲酸酐

Molecular Weight

240.211 g/mol

Category

Organic Acids

Last updated

8/21/2026