1-Methyl-1H-indole-2,3-dione 1-Methyl-2,3-dihydroindole-2,3-dione 1-Methyl-indole-2,3-dione 1-Methylisatin 1H-Indole-2,3-dione, 1-methyl- (9CI) 2058-74-4 5-21-10-00236 (Beilstein Handbook Reference) BRN 0128280 EINECS 218-164-9 INDOLE-2,3-DIONE, 1-METHYL- N-Methylisatin NSC 42449 OL-57