Ethyl 3-(difluoromethyl)-4-methyl-6-nitropyridine-2-carboxylate
6-(Difluoromethyl)-2-methyl-4-nitropyridine-3-carbonyl chloride
Ethyl 3-(difluoromethyl)-4-methyl-5-nitropyridine-2-carboxylate
2-(Difluoromethyl)-6-methyl-3-nitropyridine-5-carbonyl chloride