5-(Fluoromethyl)-3-hydroxy-2-(trifluoromethoxy)pyridine-4-carboxylic acid
3-(Fluoromethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
2-(Fluoromethyl)-6-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxylic acid
Ethyl 5-hydroxy-2-methyl-4-(trifluoromethoxy)pyridine-3-acetate