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