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