Methyl 3-amino-2-(difluoromethyl)-6-(trifluoromethyl)pyridine-5-acetate
Ethyl 3-amino-4-(chloromethyl)-2-(difluoromethyl)pyridine-5-carboxylate
Methyl 3-amino-2-(difluoromethyl)-5-(trifluoromethyl)pyridine-4-acetate
Ethyl 2-amino-6-(chloromethyl)-3-(difluoromethyl)pyridine-4-carboxylate