4-(Difluoromethyl)-3-hydroxy-5-methyl-2-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-5-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid
4-(Chloromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-5-carboxylic acid