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