Ethyl 3-chloro-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 6-chloro-2-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carboxylate
4-Cyano-3-fluoro-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
Ethyl 2-chloro-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate