Cyanine5.5maleimideisathiolreactivedyewhichiscapableofselectivelabelingofsulfhydrylgroupsinproteins,ananalogofCy5.5®maleimide.
NearinfraredemissionofCyanine5.5makesthisdyesuitableforbioimagingapplications.
Cyanine5.5canreplaceCy5.5®,AlexaFluor680,andDyLight680.
Generalproperties
| Appearance: | darkbluepowder | 
| Molecularweight: | 741.36 | 
| CASnumber: | 1594414-90-0;1593644-50-8;1854918-28-7 | 
| Molecularformula: | C46H49ClN4O3 | 
| Solubility: | solubleinorganicsolvents(DMSO,DMF,dichloromethane),lowsolubilityinwater | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:24monthsafterreceivalat-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 |