Ethyl 3-(difluoromethyl)-6-nitro-4-(trifluoromethyl)pyridine-2-carboxylate
Methyl 5-amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-4-carboxylate
6-Cyano-3-methoxy-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
4-Cyano-5-(difluoromethyl)-2,3-diiodopyridine