3-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
Methyl 4-(bromomethyl)-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-acetate
3-(Difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride