3-Imino-4-methyl-3,4-dihydro-1lambda~5~,2,4-benzotriazin-1-ol hydrochloride 4-Methyl-1,2,4-benzotriazin-3(4H)-imine 1-oxide, hydrochloride AIDS-156477 AIDS156477 NSC623596 NSC623599 (HYDROCHLORIDE SALT)