4,5-Dichlorophthalic anhydride

• CAT Number: L020349
• CAS Number: 942-06-3
• Molecular Formula: C8H2Cl2O3
• Molecular Weight: 217.00
• Purity: ≥95%
• IUPAC Name: 5,6-dichloro-2-benzofuran-1,3-dione
• InChI: InChI=1S/C8H2Cl2O3/c9-5-1-3-4(2-6(5)10)8(12)13-7(3)11/h1-2H
• InChIKey: ULSOWUBMELTORB-UHFFFAOYSA-N
• SMILES: C1=C2C(=CC(=C1Cl)Cl)C(=O)OC2=O

4,5-Dichlorophthalic anhydride（Cat No.:L020349）is a chlorinated aromatic anhydride derived from phthalic acid, featuring chlorine atoms at the 4 and 5 positions of the benzene ring. This compound is primarily used as an intermediate in the synthesis of specialty polymers, dyes, pigments, and agrochemicals. Its anhydride group is highly reactive toward nucleophiles, enabling ring-opening reactions with amines and alcohols to form imides and esters. The dichloro substitution enhances electron-withdrawing effects, impacting reactivity and thermal properties of the resulting compounds. It is valuable in advanced material development and fine chemical production.