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
4-(Aminomethyl)-2-(difluoromethyl)-6-fluoro-3-methylpyridine