The styryl dye RH414 is a fast-responding potentiometric probe that is primarily used for functional imaging of neurons. Excitation/emission data is for the dye in methanol. In cell membranes, the spectra of styryl dyes are typically blue-shifted by as much as 20 nm for absorption or excitation and 80 nm for emission.    &lamda;Ex/&lamba;Em (MeOH) = 532/716 nm  Orange red soluble in H2O or DMSO  Store at -20°C and protect from light  C28H43Br2N3  MW: 581.48  [161433-30-3]