2(3H)-Benzothiazolone, hydrazone 2-Benzothiazolylhydrazine 2-Hydrazinobenzothiazole 615-21-4 Benzothiazole, 2-hydrazino- Benzothiazolohydrazine NSC3271 Usaf ek-3967 WLN: T56 BN DSJ CMZ