1,3-Dihydro-3-hydroxy-3-(2-oxopropyl)-2H-indol-2-one 2H-INDOL-2-ONE, 1,3-DIHYDRO-3-HYDROXY-3-(2-OXOPROPYL)- 3-Hydroxy-3-acetonyl-2-oxindole 33417-17-3 4-21-00-06476 (Beilstein Handbook Reference) BRN 0182807 NSC 174507