rmaceutical/Biotech/chemical: 1-Chloro-2-iodoethane is used as a mild electrole for iodination of metallated species, as in the conversion of an ortho-lithiated benzyl ether to the corresponding ortho-iodide. It reacts with 5-hydroxy-[1,4]nahoquinone, and obtain the 5-(2-chloro-ethoxy)-[1,4]nahoquinone.