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