Ethyl 3-(difluoromethyl)-4-methoxypyridine-5-acetate
4-(Chloromethyl)-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-acetic acid
Ethyl 3-(difluoromethyl)-2-methoxypyridine-5-acetate
5-(Chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride