Sulfo-Cyanine5.5isawater-soluble,hydrophilicfluorophorewhichpossessesemissioninfarredareaofthespectrum,ananalogofCy5.5®.Asothercyaninedyes,sulfo-Cyanine5.5hasanoutstandingmolarextinctioncoefficientwhichgivesrisetoitsbrightfluorescence.
Themoleculecontainsfoursulfogroupsthatprovidehydrophilicityandnegativechargetothefluorophore-thisminimizesnon-specificbinding.
Theazidegroupofsulfo-Cyanine5.5azidecanbeconjugatedwithterminalalkynesinthepresenceofcopper(I)catalyst,orwithcycloalkynesincopperfreestrainpromotedreaction.
Generalproperties
Appearance: | darkcoloredsolid |
MassspecM+increment: | 984.2 |
Molecularweight: | 1099.41 |
Molecularformula: | C43H45K3N6O13S4 |
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 |