Ethyl 5-hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylate
3-Hydroxy-4-methoxy-5-(trifluoromethoxy)pyridine-2-methanol
Ethyl 3-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-5-carboxylate
5-Hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid