(2,5-二甲氧基苄亚基)丙二酸二乙基酯

7-羟基-2-氧代-2H-苯并吡喃-3-甲酸甲酯

7-methoxy-2-imino-2H-chromene-3-carbonitrile

(2,5-dimethoxy-benzylidene)-malonic acid

dipotassium 2,5-dimethoxybenzylidenemalonate