6-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-(Bromomethyl)-6-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-carbonyl chloride
2-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-(Difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-6-carbonyl chloride