Fluorescein(FAM)isabrightfluorophorethathasfoundanextremelywideapplicationinlifescienceresearch.Thefluorophoreishydrophilicanditsderivativespossessgoodsolubilityinaqueousbuffers.
FluoresceiniscompatIBLewithawidevarietyoffluorescentinstrumentation-mostinstrumentsareequippedwithFAMchannelfilters.
Thisproductcontainsthepure6-isomeroffluorescein.
Recommendedprotocol
NHSesterlabelingofaminobiomolecules
Generalproperties
| Appearance: | yellowcrystallinesolid |
| MassspecM+increment: | 358.0 |
| Molecularweight: | 473.39 |
| Molecularformula: | C25NO9H15 |
| IUPACname: | (2,5-dioxopyrrolidin-1-yl)3",6"-dihydroxy-1-oxospiro[2-benzofuran-3,9"-xanthene]-5-carboxylate |
| Solubility: | goodinDMF,DMSO |
| Qualitycontrol: | NMR1H,HPLC-MS(95%) |
| Storageconditions: | Storage:12monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. |
Spectralproperties
| Excitationmaximum,nm: | 494 |
| ε,L⋅mol−1⋅cm−1: | 75000 |
| Emissionmaximum,nm: | 520 |
| Fluorescencequantumyield: | 0.9 |
| CF260: | 0.20 |
| CF280: | 0.17 |