4-Ethyl-6,7-dimethoxy-9H-pyrido(3,4-b)indole-3-carboxylic acid, methyl ester 82499-00-1 9H-Pyrido(3,4-b)indole-3-carboxylic acid, 4-ethyl-6,7-dimethoxy-, methyl ester DMCM Methyl 4-ethyl-6,7-dimethoxy-9H-pyrido(3,4-b)indole-3-carboxylate Methyl 6,7-dimethoxy-4-ethyl-beta-carboline-3-carboxylate