Ethyl 4-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-3-acetate
3-Hydroxy-5-methyl-2-(trifluoromethoxy)pyridine-4-acetonitrile
5-Hydroxy-4-methyl-3-(trifluoromethoxy)pyridine-2-acetonitrile
Ethyl 4-hydroxy-6-nitro-2-(trifluoromethoxy)pyridine-3-acetate