1(2H)-Phthalazinone, hydrazone 1-Hydrazinophthalazine 86-54-4 Apresolin Apresoline Apressin Aprezolin Ba 5968 C-5068 C-5968 Ciba 5968 Hidralazin Hipoftalin Hydralazin Hydralazine Hydrallazine Hydrazinophthalazine Hypophthalin NSC126699 Phthalazine, 1-hydrazino- WLN: T66 CNNJ BMZ