6-Hydroxy-4-methyl-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
5-(Chloromethyl)-4-hydroxy-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
3-(Chloromethyl)-4-hydroxy-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
2-Hydroxy-4-methyl-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride