SEARCH Articles Figures Tables 177-INDOLE-5-CARBOXYLIC ACID 2- METHYL-, ETHYL ESTER Carboxylic acids methylation Indole acidity Indole acids Indole carboxylate Indole-2-carboxylic acids Indole-3-carboxylic acid, 1-methoxy methyl ester Indoles acidity Indoles, methylated Indolic acids Methyl 2- indole-3-carboxylate Methyl carboxylate