1-Ethoxycarbonylmethyl-1-methyl-1,2,3,4-tetrahydro-beta-carbolin-2-ium chloride 1H-Pyrido(3,4-b)indole-1-acetic acid, 2,3,4,9-tetrahydro-1-methyl-, ethyl ester, monohydrochloride, (+-)- 75847-64-2 Carbonylmethyltetrahydro-beta-carboline