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