Ethyl 4-(difluoromethyl)-5-hydroxy-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 4-(difluoromethyl)-3-hydroxy-5-(trifluoromethoxy)pyridine-2-carboxylate
4-Hydroxy-5-iodo-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Hydroxy-5-methoxy-6-methyl-3-(trifluoromethoxy)pyridine