2-Hydroxyethyl 4-(3-Chloro-4,4-dimethyl-2-tridecyloxazolidin-2-yl)butanoate is an intermediate in the synthesis of 5-DOXYL-stearic Acid, Free Radical (D535528), a spin label that is used for investigating structural changes in lipids. 5-DOXYL-stearic Acid, Free Radical can also be used in biological study of C-edge loops of arrestin function as membrane anchor.