2-Amino-7,8-dihydro-4-piperazinyl-6H-thiopyrano(3,2-d)pyrimidine 6H-Thiopyrano(3,2-d)pyrimidin-2-amine, 7,8-dihydro-4-(1-piperazinyl)- 87466-13-5 Mtp 1403 Mtp-1403