Ethyl(3-iodopropyl)selane-d5 is the isotope labelled analog of Ethyl(3-iodopropyl)selane. Ethyl(3-iodopropyl)selane is synthesized from bromoethane (B684195). Bromoethane is used in the synthesis of novel non-competitive antagonists of kainate Glu1/Glu2 receptors.