1-Piperazinecarboselenoic acid, 4-(2-pyridinyl)-, {[1-(2-pyridinyl)ethylidene]hydrazide} 4-(2-Pyridinyl)-N'-(1-(2-pyridinyl)ethylidene)-1-piperazinecarboselenohydrazide 79514-41-3 AIDS-129107 AIDS129107 NSC328784