5-氨基-1,4-苯并二恶烷

ethyl 3-ethyl-2,4-dioxo-1H-pyrimidine-5-carboxylate

二乙基[[3,4-(亚甲二氧基)苯胺基]亚甲基]丙二酸酯

7-苄氧基-4-羟基喹啉-3-羧酸乙酯

diethyl 2-[[bis(2-hydroxyethyl)amino]methylidene]propanedioate