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