Farred/nearinfrareddyealkyneforClickchemistrylabeling.Cyanine5.5isananalogofCy5.5®,apopularfluorophorewhichhasbeenwidelyusedforvariousapplicationsincludingintactorganismimaging.ThisreagentcanbeconjugatedwithazidogroupsundermildcoppercatalyzedClickChemistryconditions.
Thisreagentissolubleinorganicsolvents,butmixturesofwaterwithsmallpercentofDMSOcanbeusedforefficientconjugation.Cyanine5.5alkynecanalsobeusedforthelabelingofsmallmoleculeswiththisfarred/NIRdye.
Generalproperties
| Appearance: | darkbluepowder | 
| Molecularweight: | 656.30 | 
| Molecularformula: | C43H46ClN3O | 
| Solubility: | goodinorganicsolvents(DMF,DMSO,acetonitrile,DCM,alcohols),lowinwater | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight. | 
Spectralproperties
| Excitationmaximum,nm: | 684 | 
| ε,L⋅mol−1⋅cm−1: | 209000 | 
| Emissionmaximum,nm: | 710 | 
| Fluorescencequantumyield: | 0.2 | 
| CF260: | 0.07 | 
| CF280: | 0.03 |