SynaptoGreen™ C3 is similar to SynaptoGreen™ C4, except that the lipophilic tail is one carbon shorter and also the hydrophilic end is a trimethylammonium group. Thus SynaptoGreen™ C3 is slightly more water soluble than SynaptoGreen™ C4.    &lamba;Ex/&lamba;Em: 510/625 nm (in MeOH); 480/598 nm (in membranes)  Red solid soluble in water  C25H39Br2N3  MW: 542