Amine-reactive form of single isomer carboxyrhodamine 110. For certain applications, the dye is preferred over the corresponding 6-carboxyfluorescein because of its exceptional photostability and fluorescence insensitivity to pH change (4-9). <ul> <li>&lamba;_Ex/&lamba; _Em(MeOH) = 502/524 nm</li> <li>Orange red solid soluble in DMF or DMSO</li> <li>Store at -20°C and protect from light</li> <li>C₃₃H₃₆N₄O₇</li> <li>MW: 600.67</li> </ul>