Cyclohexenyl Ethyl Amine CHEA is the substrate suited for making an allylic hydroxylation reaction. This is suited for the preparation of thin films as well as single crystals. In addition, this is used to make optoelectronic-compatible heterostructures. Cyclohexenyl Ethyl Amine CHEA is not directly intended for Diagnostic or Therapeutic utilization. This is a substrate made for allylic hydroxylation reaction. Also, this is suited for the preparation of single crystals and thin films.