101372-78-5 1H-Pyrido(3,4-b)indole-1-carboxylic acid, 2,3,4,9-tetrahydro-1-methyl-, methyl ester, monohydrochloride Methyl 2,3,4,9-tetrahydro-1-methyl-1H-pyrido(3,4-b)indole-1-carboxylate monohydrochloride