Cyanine3tetrazineisafluorescentdyebearingtetrazinemoietyforaconjugationreactioncalledTCO(trans-cyclooctene)ligation.Actually,tetrazinesreactnotonlywithtrans-cyclooctenes,butalsowith(methyl)cyclopropenesandstrainednon-benzo-fusedcycloalkynes.
Cyanine3isamoderatelyhydrophobicdye,enablinglabelinginnon-aqueousenvironmentaswellasinaqueousmediacontainingsomeorganicco-solventlikeacetonitrileorDMSO.Forreactionsinpurelyaqueousmedia,asulfonatedversionofthisreagentisavailable.
Appearance: | darkredsolid |
MassspecM+increment: | 611.4 |
Molecularweight: | 727.64 |
Molecularformula: | C40H46N7BF4O |
Solubility: | goodinDCM,DMSO,DMF |
Qualitycontrol: | NMR1H,HPLC-MS(95%) |
Storageconditions: | Storage:24monthsafterreceivalat-20°Cinthedark.Transportation:atroomtemperatureforupto3weeks.Avoidprolongedexposuretolight.Desiccate. |
Excitationmaximum,nm: | 555 |
ε,L⋅mol−1⋅cm−1: | 150000 |
Emissionmaximum,nm: | 570 |
Fluorescencequantumyield: | 0.31 |
CF260: | 0.04 |
CF280: | 0.09 |
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