1073-70-7 4-Chlorophenylhydrazine hydrochloride 4-Chlorophenylhydrazine monohydrochloride Hydrazine, (4-chlorophenyl)-, monohydrochloride Hydrazine, (p-chlorophenyl)-, monohydrochloride NSC59703 p-Chlorophenylhydrazine hydrochloride p-Chlorophenylhydrazine monohydrochloride