Methyl 4-amino-2-(difluoromethyl)-5-fluoropyridine-3-carboxylate
Ethyl 3-(chloromethyl)-2-cyano-6-(trifluoromethoxy)pyridine-5-carboxylate
4-Cyano-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Cyano-4-nitro-2-(trifluoromethoxy)pyridine-6-sulfonamide