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