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