1-Piperazinecarbothioic acid, 4-(2-pyridinyl)-, [1-(2-pyridinyl)butylidene]hydrazide 4-(2-PYRIDINYL)-1-PIPERAZINECAROTHIOIC ACID, [1-(2-PYRIDINYL)BUTYLIDENE]HYDRAZIDE 86919-64-4 NSC335794