1(2H)-ISOQUINOLINONE, 5,6,7,8-TETRAHYDRO-2-BUTYL-3-HYDROXY-4-(1-IMINOETHYL)- 5,6,7,8-Tetrahydro-2-butyl-3-hydroxy-4-(1-iminoethyl)isoquinolin-1(2H)-one 89246-50-4