SEARCH Articles Figures Tables 177-INDOLE-5-CARBOXYLIC ACID 2- METHYL-, ETHYL ESTER 3-Ethyl-indole Ethyl 4 -carboxylates Ethyl indole-2-carboxylate Indole acidity Indole acids Indole carboxylate Indole-2-carboxylic acids Indoles acidity Indolic acids