7-Methoxy-4-quinolinol , its cas register number is 82121-05-9. It also can be called 7-methoxyquinolin-4(1H)-one ; 7-Methoxy-4(1h)-Quinolinone ; 7-Methoxyquinolin-4-Ol ; 4-Hydroxy-7-Methoxyquinoline .