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