2-Hydroxy-5-methyl-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-(Difluoromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-2-carboxylic acid
6-(Difluoromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-4-methanol
2-(Difluoromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-4-acetic acid