diethyl [(-)-7,8-difluoro-3-methyl-2,3-dihydro-4H-[1,4]benzoxazin-4-yl]methylenemalonate

6-氨基-2,3-二氟苯酚

diethyl N-(3,4-difluoro-2-hydroxyphenyl)aminomethylenemalonate

3,4-二氟苯基氨基甲酸叔丁酯

diethyl [3,4-difluoro-2-(2-hydroxypropyloxy)anilinyl]methylenemalonate