24589-77-3 4-Carboxyphenylhydrazine hydrochloride 4-Carboxyphenylhydrazinium chloride Benzoic acid, 4-hydrazino-, monohydrochloride Benzoic acid, p-hydrazino-, monohydrochloride NSC153171 p-Carboxyphenylhydrazine hydrochloride p-Hydrazinobenzoic acid hydrochloride