Ethyl 2-(bromomethyl)-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetate
6-(Bromomethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
Ethyl 2-(difluoromethyl)pyridine-4-carboxylate
Ethyl 4-(bromomethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetate