1H-Pyridazino(1,2-a)(1,2,5)triazepine-1,5(2H)-dione, hexahydro-3-(4-ethoxyphenyl)- 3-(4-Ethoxyphenyl)-hexahydro-1H-pyridazino(1,2-a)(1,2,5)triazepine-1,5(2H)-dione 69405-19-2 BRN 0695004 Hexahydro-3-(4-ethoxyphenyl)-1H-pyridazino(1,2-a)(1,2,5)triazepine-1,5(2H)-dione NSC 337243