1H-INDOLE-2-CARBOXYLIC ACID, 3-(DIPHENYLMETHYL)-5-HYDROXY- 3-(Diphenylmethyl)-5-hydroxy-1H-indole-2-carboxylic acid 5-22-05-00366 (Beilstein Handbook Reference) 5-Hydroxy-3-(diphenylmethyl)-2-indolecarboxylic acid 53924-10-0 BRN 0441271