3-Fluoro-6-nitro-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Cyano-3-methoxy-5-(trifluoromethoxy)pyridine-6-acetic acid
5-Fluoro-2-nitro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Fluoro-3-nitro-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride