2H-Pyrrolo[2,3-b]pyridin-2-one,5-broMo-4-chloro-1,3-dihydro-; 5-bromo-4-chloro-1H,2H,3H-pyrrolo[2,3-b]pyridin-2-one; 5-Bromo-4-chloro-7-aza-2-oxindole; 5-Bromo-4-chloro-1H-pyrrolo[2,3-b]pyridin-2(3H)-one;