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