Cyanine5azidelabelingreagentforClickchemistry,availableas10mMsolutioninDMSO,andinsolidform.
Thisazideissolubleinorganicsolvents(e.g.DMSO,DMF),thereforethelabelingreactionshouldbecarriedoutwithasmallamountofanorganicco-solvent.Thisazidecanbeusedforthelabelingofalkyne-modifiedbiomoleculesinmixturesofwaterwithorganicsolvents.ThesolutioninDMSOisreadyforuseinbioconjugation.Awater-solublesulfonatedversionofthisreagentisalsoavailable.
Cyanine5isananalogofCy5®,oneofthemostcommonlyusedfluorophoreswhichiscompatIBLewithvariousinstruments.Cyanine5canalsobeusedasareplacementforAlexaFluor®647,andDyLight®649.
Generalproperties
| Appearance: | darkbluepowder/solution |
| Molecularweight: | 601.22 |
| Molecularformula: | C35H45ClN6O |
| Solubility: | solubleinorganicsolvents(DMSO,DMF,dichloromethane),lowsolubilityinwater |
| Qualitycontrol: | NMR1H,HPLC-MS(95%) |
| Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. |
Spectralproperties
| Excitationmaximum,nm: | 646 |
| ε,L⋅mol−1⋅cm−1: | 250000 |
| Emissionmaximum,nm: | 662 |
| Fluorescencequantumyield: | 0.2 |
| CF260: | 0.03 |
| CF280: | 0.04 |