Cyanine5.5NHSesterisareactivedyeforthelabelingofamino-groupsinpeptides,proteins,andoligonucleotides,ananalogofCy5.5®NHSester.
Cy5.5isafar-red(andnear-infrared)emittingdyewhichisidealforfluorescencemeasurementswherebackgroundfluorescenceisaconcern.ItisalsosuitableforinvivoNIRimagingexperiments.
ThisreagentcanreplaceNHSestersofCy5.5®,AlexaFluor680,andDyLight680.
Generalproperties
| Appearance: | darkbluepowder | 
| Molecularweight: | 716.31 | 
| Molecularformula: | C44H46ClN3O4 | 
| Solubility: | solubleinorganicsolvents(DMSO,DMF,dichloromethane),lowsolubilityinwater | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:12monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. | 
Spectralproperties
| Excitationmaximum,nm: | 684 | 
| ε,L⋅mol−1⋅cm−1: | 209000 | 
| Emissionmaximum,nm: | 710 | 
| Fluorescencequantumyield: | 0.2 | 
| CF260: | 0.07 | 
| CF280: | 0.03 |