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