Methyl 6-(difluoromethyl)-2-fluoro-4-nitropyridine-3-carboxylate
Methyl 3-(difluoromethyl)-2-fluoro-6-nitropyridine-4-carboxylate
3-(Aminomethyl)-6-(difluoromethyl)-2-fluoro-5-methylpyridine
4-(Bromomethyl)-2-(difluoromethyl)-3-fluoropyridine-5-carboxylic acid