2-indolinecarboxylic acid, indolin-2-yl carboxylic acid, 2,3-dihydro-1H-indol-2-carboxylic acid, 2,3-dihydro-1H-indole-2-carboxylic acid, L-INDOLINE-2-CARBOXYLIC ACID, D,L-indoline-2-carboxylic acid, 1H-INDOLINE-2-CARBOXYLIC ACID, Indoline-2-carboxylicAcid,DL