100650-75-7 4-(N-Cyclopentylaminomethyl)-1(3),4,6,7-tetrahydro-1(3H)-thiopyrano(3,4-d)imidazole fumarate Thiopyrano(3,4-d)imidazole, 1(or 3),4,6,7-tetrahydro-4-((cyclopentylamino)methyl)-, fumarate (1:1)