Sulfo-Cyanine7.5isawatersoluble,nearinfraredfluorescentdye.Thestructureofthedyeissimilartoindocyaninegreen(ICG),butitcontainsarigidtrimethinelinkerincreasingitsfluorescencequantumyield.
Thisfluorophoreisusefulfornearinfraredimaging.Sulfo-Cyanine7.5carboxylicacidcontainsafreecarboxygroup.
Generalproperties
| Appearance: | darkgreensolid | 
| Molecularweight: | 1083.41 | 
| Molecularformula: | C45H45K3N2O14S4 | 
| Solubility: | goodinwater,DMF,DMSO | 
| Qualitycontrol: | NMR1H,HPLC-MS(95%) | 
| Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. | 
Spectralproperties
| Excitationmaximum,nm: | 778 | 
| ε,L⋅mol−1⋅cm−1: | 222000 | 
| Emissionmaximum,nm: | 797 | 
| CF260: | 0.09 | 
| CF280: | 0.09 |