Pharmaceutical/Chemical: - Iodoethane is an excellent ethylating agent used in organic synthesis to introduce an ethyl group into a compound. - It reacts with magnesium to form the Grignard
reagent, - ethylmagnesium iodide which is used in organic synthesis. - It is involved in the preparation of 1-ethyl-3-nitro-2-phenyl-indole and also serves as hydrogen radical promoter.