Methyl 4-amino-6-(difluoromethyl)-3-methylpyridine-2-acetate
Methyl 3-amino-5-(difluoromethyl)-2-nitropyridine-6-acetate
Methyl 3-amino-4-(difluoromethyl)-6-nitropyridine-2-acetate
5-Amino-4-(bromomethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine