Methyl 2-hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-hydroxy-5-methoxy-3-(trifluoromethoxy)pyridine-4-carboxylate
2-Hydroxy-6-methoxy-3-(trifluoromethoxy)pyridine-4-acetic acid
3-Fluoro-4-(fluoromethyl)-6-(trifluoromethoxy)pyridine-2-carboxylic acid