4-Chlorobutyryl chloride

It is specifically critical in the synthesis of the antiepileptic drug Levetiracetam, and is also used in the preparation of Vilazodone and various Fexofenadine analogs. 4-Chlorobutyryl chloride is a versatile organic reagent used as a building block in the pharmaceutical industry to construct the 2-oxo-pyrrolidine moiety or to introduce a 4-chlorobutanoyl group.

CAS No 4635-59-0
Molecular Formula C4H6Cl2O
Molecular Weight 140.99 g/mol
Synonyms 4-chlorobutanoyl chloride