Aripiprazole - Impurity A

7-Hydroxy-3,4-dihydroquinolin-2(1H)-one;  3,4-Dihydro-7-hydroxyquinoline-2(1H)-one; Aripiprazole
Dihydro Quinolinone; 7-Hydroxycarbostyril; 3,4-Dihydro-7-hydroxy-2(1H)-quinolinone; 3,4-Dihydro-7-hydroxy-carbostyril; 7-Hydroxy-1,2,3,4-tetrahydro-2-quinolinone