Ethyl 4-(difluoromethyl)-3-fluoro-2-nitropyridine-6-carboxylate
Ethyl 2-(difluoromethyl)-6-fluoro-5-nitropyridine-3-carboxylate
6-(Chloromethyl)-2-(difluoromethyl)-3-fluoro-4-methylpyridine
2-(Difluoromethyl)-6-fluoro-3-nitropyridine-4-carbonyl chloride