Methyl 2-amino-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetate
Methyl 2-amino-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-amino-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-amino-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-5-acetate