4,7-dichloro-1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic acid

4,7-二氯-1,3-二氧代-1,3-二氢异苯并呋喃-5-羧酸

Also known as: 3,6-Dichlorotrimellitic anhydride, 3,6-dichloro-4-carboxyphthalic anhydride, 4,7-dichloro-1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid, 5-Isobenzofurancarboxylic acid, 4,7-dichloro-1,3-dihydro-1,3-dioxo-, Fluorescein Impurity 2 (3,6-Dichlorotrimellitic Anhydride), VIC/SM01

4,7-dichloro-1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic acid (CAS 81742-10-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H2Cl2O5 and a molecular weight of 261.01500 g/mol. It is also known as 3,6-Dichlorotrimellitic anhydride, 3,6-dichloro-4-carboxyphthalic anhydride and 4,7-dichloro-1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

81742-10-1

Jingsj CID

J-1958551-4

Molecular Formula

C₉H₂Cl₂O₅

Chinese Name

4,7-二氯-1,3-二氧代-1,3-二氢异苯并呋喃-5-羧酸

Molecular Weight

261.01500 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026