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