Vilazidonemethyl piperazine HCl impurity

Vilazidonemethyl piperazine HCl impurity is a structurally related synthetic byproduct derived from the alkylation of Vilazidone's dibenzofuran core with methyl piperazine. The compound features a substituted piperazine ring linked via a methylene bridge to the aromatic heterocycle, with hydrochloride salt formation protonating the piperazine nitrogen. This impurity arises during API synthesis due to incomplete reaction of the piperazine moiety. It serves as a critical HPLC reference standard for quantifying process-related impurities in Vilazidone formulations.