3,5-Dichloro-4-methoxybenzoyl chloride

CAS 29568-76-1

3,5-Dichloro-4-methoxybenzoyl chloride (CAS 29568-76-1) shows how molecular structure determines chemical role. 3,5-Dichloro-4-methoxybenzoyl chloride (CAS 29568-76-1) is an activated aromatic acid derivative designed for acyl-transfer chemistry. Converting a benzoic acid to its acid chloride replaces the hydroxyl group with chlorine and greatly increases the carbonyl carbon's susceptibility to nucleophilic attack. Amines can therefore convert this reagent into benzamides, while alcohols can give esters. The aromatic ring carries two chlorines flanking a methoxy group, a substitution pattern that strongly shapes steric and electronic behavior in downstream products. Public exact-CAS sources mainly identify it as a synthetic intermediate; they do not establish one dominant end use or an independent biological role. Its Chemical Story is consequently the chemistry of controlled acylation: a preactivated fragment that transfers a substituted benzoyl.