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