1H-Pyrido(3,4-b)indole, 2,3,4,9-tetrahydro-9-methyl-1-(4-pyridinyl)-, monohydrochloride 2,3,4,9-Tetrahydro-9-methyl-1-(4-pyridinyl)-1H-pyrido(3,4-b)indole hydrochloride 28712-52-9