5-CR110-X, SE (full name: 5-Carboxyrhodamine 110-X, succinimidyl ester) is the amine-reactive form of 5-carboxyrhodamine 110 with a 6-carbon spacer. <ul> <li>&lamba;_Ex/&lamba; _Em(MeOH) = 502/524 nm</li> <li>Orange red solid soluble in DMSO or DMF</li> <li>Store at -20°C and protect from light</li> <li>C₃₁H₂₈N₄O₈</li> <li>MW: 584.58</li> </ul>