Sulfo-Cyanine5.5(analogofCy5.5®)isawater-soluble,farredemittingfluorophore.Duetofoursulfo-groups,thedyepossessesnegativechargeinneutralpH,andveryhighhydrophilicity.
Asacyaninedye,sulfo-Cyanine5.5showsverylowdependenceofthefluorescenceonpH,andveryhighextinctioncoefficient.
Generalproperties
| Appearance: | darkbluesolid | 
| Molecularweight: | 1017.31 | 
| Molecularformula: | C40H39K3N2O14S4 | 
| Solubility: | goodinwater,DMF,DMSO | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. | 
Spectralproperties
| Excitationmaximum,nm: | 673 | 
| ε,L⋅mol−1⋅cm−1: | 195000 | 
| Emissionmaximum,nm: | 691 | 
| CF260: | 0.09 | 
| CF280: | 0.11 |