Awatersoluble,hydrophilicsulfo-Cyanine5maleimide(Cy5®maleimideanalog).Werecommendthisproductforproteinlabeling,includinglabelingofantibodiesasaperfectreplacementforCy5®maleimide.Labeledproteinscanbeeasilyseparatedfromunreacteddyebygelfiltration,spincolumnpurification,dialysis,electrophoresisorchromatography.
Ananalogwithoutsulfogroups,Cyanine5maleimide,isalsoavailable.
Generalproperties
| Appearance: | darkbluepowder | 
| Molecularweight: | 803.00 | 
| Molecularformula: | C38H43KN4O9S2 | 
| Solubility: | solubleinwater,DMSO,DMF | 
| Qualitycontrol: | NMR1H,HPLC-MS(95+%) | 
| Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. | 
Spectralproperties
| Excitationmaximum,nm: | 646 | 
| ε,L⋅mol−1⋅cm−1: | 271000 | 
| Emissionmaximum,nm: | 662 | 
| Fluorescencequantumyield: | 0.28 | 
| CF260: | 0.04 | 
| CF280: | 0.04 |