(All-Z)-8,11,14,17-Eicosatetraenoic Acid Ethyl Ester-d5 is an isotope analog of (All-Z)-8,11,14,17-Eicosatetraenoic Acid Ethyl Ester. (All-Z)-8,11,14,17-Eicosatetraenoic Acid Ethyl Ester is an ethyl analog of (all-cis)-8,11,14,17-Eicosatetraenoic Acid (E477900) and it is used in biological studies for two-step enzymic synthesis of docosahexaenoic acid-rich symmetry structured triacylglycerols via 2-monoactlglyerols.