KMG-104AM, a selective fluorescein-derived magnesium fluorescent membrane-permeable probe, successfully incorporates into PC12 cells and is used to Intracellular 3D Mg2+ Imaging [1].
[1]. Komatsu H, et al. Design and synthesis of highly sensitive and selective fluorescein-derived magnesium fluorescent probes and application to intracellular 3D Mg2+ imaging. J Am Chem Soc. 2004 Dec 22;126(50):16353-60.