3-(Difluoromethyl)-6-methoxy-4-nitropyridine-2-carbonyl chloride
5-(Difluoromethyl)-2-methoxy-3-nitropyridine-6-carbonyl chloride
6-Cyano-3-(trifluoromethoxy)pyridine-2-carbonyl chloride
4-(Difluoromethyl)-5-methoxy-3-nitropyridine-2-carbonyl chloride