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