N-methyl-4,4-difluoro Modafinil (Item No. 18332) is an analytical reference material that is categorized as a nootropic. It is a substituted form of modafinil , a wake-promoting agent that binds the dopamine transporter and modulates catecholaminergic signaling (IC50 = 3 μM; Ki = 2 μM). The physiological and toxicological properties of this compound are not known. This product is intended for research and forensic applications.