114896-50-3 2-(Ethoxycarbonyl)-1-phenyl-2,3,4,9-tetrahydro-1H-pyrido(3,4-b)indole 2H-Pyrido(3,4-b)indole-2-carboxylic acid, 1,3,4,9-tetrahydro-1-phenyl-, ethyl ester BRN 4557154 Ethyl 1,3,4,9-tetrahydro-1-phenyl-2H-pyrido(3,4-b)indole-2-carboxylate