Ethyl 3-hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-5-carboxylate
5-Hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid
3-Hydroxy-5-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 6-hydroxy-2-methoxy-3-(trifluoromethoxy)pyridine-4-carboxylate