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