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