Butoconazol Impurity 2

Butoconazol Impurity 2 is a chlorinated azole derivative featuring a 1H-1,2,4-triazole core linked to a substituted benzyl group via a methylene bridge. The molecule incorporates a 4-chlorophenyl moiety and a branched butyl side chain, differing from the parent drug by a positional isomerism in the aromatic chlorination and side-chain branching. This impurity arises during synthetic pathways due to competing electrophilic substitution on the benzene ring. It functions as an HPLC reference standard for quantifying process-related impurities in Butoconazol formulations.