6,7-Dihydro-5H-isoquinolin-8-one (CAS NO.21917-88-4), its Synonyms are 8(5H)-Isoquinolone,6,7-dihydro- (8CI) ; 5,6-Dihydro-7H-isoquinolin-8-one ; 5,6-Dihydroisoquinolin-8(7H)-one ; 8(5H)-Isoquinolinone,6,7-dihydro- .