Methyl 3-(difluoromethyl)-2-methoxy-6-(trifluoromethoxy)pyridine-5-acetate
4-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-2-sulfonamide
6-Nitro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
2-Nitro-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-sulfonyl chloride