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