SynaptoGreen™ C5 is similar to SynaptoGreen™ C4, except that the lipophilic tail is one carbon longer. Thus SynaptoGreen™ C5 is less water soluble than SynaptoGreen™ C4 and is predicted to have a faster staining rate but slower de-staining rate.    Ex/Em: 510/625 nm (in MeOH)  Red solid soluble in water  C32H53Br2N3  MW: 640    FM is a registered trademark of Thermo Fisher Scientific.