Product Description: Cyclen is the aza analogue of crown ether, used as a precursor for MRI contrast agents, and is an intermediate for the preparation of effective macrocyclic chelates[1].
Formula: C8H20N4
References: [1]Rashid HU, et al. Cyclen-based Gd3+ complexes as MRI contrast agents: Relaxivity enhancement and ligand design. Bioorg Med Chem. 2016 Nov 15;24(22):5663-5684.