3-Fluoro-6-methoxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Fluoro-2-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Fluoro-6-methoxy-3-(trifluoromethoxy)pyridine-5-acetic acid
6-Fluoro-3-methoxy-2-(trifluoromethoxy)pyridine-4-acetic acid