4-(4-Methyl-1-piperazinylmethyl)-2,3,4,9-tetrahydrothiopyrano(2,3-b)indole 73425-94-2 BRN 0550062 Thiopyrano(2,3-b)indole, 2,3,4,9-tetrahydro-4-(4-methyl-1-piperazinylmethyl)-