Ethyl 6-(chloromethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(chloromethyl)-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
2-Bromo-5-(difluoromethyl)pyridine-3-sulfonyl chloride
Ethyl 6-(chloromethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylate