6,7-dimethoxy-2,3-dimethyl-1(2H)-isoquinolinone

2,3-二甲氧基-1,3-丁二烯

1-甲基-2-氧代-1,2-二氢-4-吡啶甲腈

3-carboxy-6,7-dimethoxy-2-methylisoquinolone

6,7-dimethoxy-3-formyl-2-methyl-1(2H)-isoquinolone