3-Hydroxy-4-methoxy-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-(Chloromethyl)-2-fluoro-4-(trifluoromethoxy)pyridine-6-carboxylic acid
Methyl 2-hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-carboxylate
3-Hydroxy-2-methoxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid