ethyl 7-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline 3-carboxylate

乙氧基甲叉丙二酸二乙酯

磷酸三乙酯(TEP)

ethyl 3-(ethylamino)prop-2-enoate

2,4-二氯-5-氟苯酰氯