4,6-Dimethoxy-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
2,4-Dimethoxy-3-(trifluoromethoxy)pyridine-6-carbonyl chloride
4,5-Dimethyl-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
2,3-Dimethoxy-6-(trifluoromethoxy)pyridine-5-carbonyl chloride