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