Sulforhodamine 101-PEO3-amine has a long water-soluble spacer separating the dye and the amine group. The dye can be coupled to activated carboxy groups or sulfonyl chlorides.λEx/λEm (MeOH) = 583/603 nm Dark purple solid soluble in DMSO or DMF Store at -20°C and protect from light C39H48N4O9S2 MW: 808
