4-Methylpiperazine-1-carbonyl chloride monohydrochloride (CAS NO.55112-42-0), its Synonyms are 4-Methylpiperazine-1-carbonyl chloride monohydrochloride ; 4-Methylpiperazine-1-carbonyl chloride hydrochloride ; N-Methylpiperazine-4-carbamoyl chloride hydrochloride ; N'-Methyl piperazine carbamoyl chloride.HCl .