Methyl 2-(difluoromethyl)-5-methoxy-6-nitropyridine-3-acetate
5-(Difluoromethyl)-2-methyl-3-nitropyridine-6-carbonyl chloride
4-(Difluoromethyl)-5-methyl-2-nitropyridine-3-carbonyl chloride
Methyl 6-(difluoromethyl)-3-methoxy-4-nitropyridine-2-acetate