2,3,4,9-Tetrahydro-9-(4-chlorobenzoyl)-N-methylthiopyrano(2,3-b)indole-4-methanamine HCl 73426-06-9 Thiopyrano(2,3-b)indole-4-methanamine, 2,3,4,9-tetrahydro-9-(4-chlorobenzoyl)-N-methyl-, monohydrochloride