2-(Difluoromethyl)-3-nitropyridine-5-sulfonamide
4-(Difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine-5-sulfonyl chloride
3-(Chloromethyl)-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-methanol
3-Hydroxy-4-methoxy-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine