1-(4-Methoxyphenyl)-4-[(1,2,3,5-tetrahydro-4H-1,4-benzodiazepin-4-yl)carbonyl]-2-pyrrolidinone is derived from Itaconic Acid (I931000), which is an unsaturated dicarbonic acid that is used as a comonomer in resins, synthetic fibers, and rubbers. Also, it is naturally biosynthesized by Aspergillus terreus, but is also synthesized in a macroscale basis from sugars.