2-ethoxycarbonylindole, indole-2-carboxylic acid ethyl ester, 1H-indole-2-carboxylic acid ethyl ester, indole-2-carboxylic acid chloride, indolecarboxylic acid chloride, 1H-2-indolecarbonyl chloride, indol-2-ylcarbonyl chloride, Ethyl Indole-2-Carboxylate, ethyl 1H-indole-2-carboxylate, ethyl 2-indolecarboxylate, 2-indole-carbonyl chloride