Methyl 2-iodo-6-nitro-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-iodo-5-methyl-2-(trifluoromethoxy)pyridine-4-acetate
Methyl 6-(difluoromethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 2-(difluoromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine-3-acetate