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