Blonanserin chloro imp

Blonanserin chloro imp is a structurally related impurity arising from chlorination during the synthesis of Blonanserin, characterized by a chloro substituent at the 5-position of the benzisoxazole core. This compound retains the piperazine-linked aliphatic chain and methoxyphenyl moiety of the parent drug but incorporates a chlorine atom, altering its electronic and steric properties. It serves as a critical HPLC reference standard for quantifying process-specific chlorinated byproducts in Blonanserin active pharmaceutical ingredient batches.