A widely used red fluorescent dye for following synaptic activity by staining synaptic vesicles at the synapse or neuromuscular junctions. When used in combination with the green fluorescent dye SynaptoGreen™, synapses or neuromuscular junctions can be imaged independently in two colors. SynaptoRed™ has also been used to study endocytosis in Dictyostelia.    Dark purple solid soluble in water  C30H45Br2N3  MW: 608  [162112-35-8]    FM is a registered trademark of Thermo Fisher Scientific.