Not less than -95.0%
1-Hydrazinylphthalazine Hydrochloride; 1(2H)-Phthalazinone Hydrazone Hydrochloride; 1-Phthalazinylhydrazine Hydrochloride;Apresoline Hydrochloride; Apulon; Hydralazine Chloride; Hydralazine Monohydrochloride; Lopres; Phthalazine,1-hydrazino-,monohydrochloride; 1-Hydrazinophthalazine monohydrochloride