Synonyms: Benzoicacid, 4-hydrazino-, methyl ester, monohydrochloride (9CI); Benzoic acid,p-hydrazino-, methyl ester, hydrochloride (7CI); Benzoic acid, p-hydrazino-,methyl ester, monohydrochloride (8CI); 4-Carbomethoxyphenylhydrazinehydrochloride; Methyl 4-hydrazinobenzoate hydrochloride;p-Carbomethoxyphenylhydrazine hydrochloride