3-Fluoro-5-nitro-4-(trifluoromethoxy)pyridine-2-sulfonamide
2-Chloro-3-cyano-4-(difluoromethyl)pyridine-6-methanol
3-(Difluoromethyl)-5-methoxy-2-nitropyridine-4-sulfonyl chloride
2-Nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-acetic acid