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