5F-MN-24 CAS # 1445580-60-8 is an analogue of NNEI, which itself is an analog of JWH 018 which differs by having an amide linker inserted between the naphthalene and ketone groups. 5-fluoro NNEI is a derivative of NNEI in which a fluorine atom has been added to the terminal carbon of the pentyl chain. This modification of other synthetic CBs typically increases the compound’s affinity for both CB receptors significantly. The physiological and toxicological properties of this compound are not known. This product is intended for forensic and research applications.