139086-70-7 3-Piperidinol, 1-(7,8-dihydro-2-(1-piperazinyl)-6H-thiopyrano(3,2-d)pyrimidin-4-yl)-, S,S-dioxide 7,8-Dihydro-4-(3-hydroxypiperidinyl)-2-piperazinyl-6H-thiopyrano(3,2-d)pyrimidine-5,5-dioxide Mtp 3631 Mtp-3631