1-(2-Piperidinoethyl)-1,9-dimethyl-1,3,4,9-tetrahydropyrano(3,4-b)indole hydrochloride 57791-02-3 Pyrano(3,4-b)indole, 1,3,4,9-tetrahydro-1,9-dimethyl-1-(2-piperidinoethyl)-, hydrochloride