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