84018-50-8
6-methyl-5,7,8-trimethoxy-1-isoquinolinecarbonitrile
→
~35%
86433-72-9
7-methoxy-6-methyl-5,8-dioxoisoquinoline-1-carbonitrile
+
86433-73-0
5-methoxy-6-methyl-7,8-dioxoisoquinoline-1-carbonitrile