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