5-Chloro-4-nitro-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
3-Chloro-4-methyl-5-(trifluoromethoxy)pyridine-2-carbonyl chloride
3-Chloro-4-nitro-2-(trifluoromethoxy)pyridine-6-carbonyl chloride
3-Chloro-2-nitro-5-(trifluoromethoxy)pyridine-6-carbonyl chloride