Sulfo-Cyanine5.5dyeisawatersolublefarredtoNIRemittingdyewhichisveryhydrophilicduetothepresenceoffoursulfogroups.Sulfo-Cyanine5.5derivativesexhibithighwatersolubility.Thedyeisaperfectchoiceforthelabelingofsensitiveproteins,nanoparticles,andhighlyhydrophylicbiopolymers.
Thismaleimideisathiolreactivedyethatselectivelylabelscysteineresidues.Disulfidebondsofnativeproteinsshouldbereducedwithanappropriatereducingagent,suchasTCEP,accordingtoourrecommendedprotocol.
Generalproperties
| Appearance: | darkcoloredsolid | 
| MassspecM+increment: | 1024.2 | 
| Molecularweight: | 1139.43 | 
| Molecularformula: | C46H45K3N4O15S4 | 
| Solubility: | goodinwater,DMSO,DMF | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:12monthsafterreceivalat-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 |