Methyl 5-(difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-3-acetate
Ethyl 2-hydroxy-5-nitro-4-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-hydroxy-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-acetate
Methyl 4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-acetate