3-Hydroxy-5-methyl-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
3-Hydroxy-4-methyl-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
Methyl 3-(difluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine-4-carboxylate
4-Hydroxy-5-iodo-2-(trifluoromethoxy)pyridine-3-carbonyl chloride