Methyl 5-(difluoromethyl)-2-methyl-4-nitropyridine-3-carboxylate
Methyl 5-(difluoromethyl)-2-methyl-3-nitropyridine-4-carboxylate
6-(Chloromethyl)-3-(difluoromethyl)-4-methoxypyridine-2-acetic acid
2-(Chloromethyl)-5-(difluoromethyl)-3-methoxypyridine-6-acetic acid