Synonym:Fmoc-Sec(Mob)-OH,Fmoc-S-4-methoxybenzylselenocysteineProperties:
RelatedCategories | AminoAcids&Derivatives,ChemicalBIOLOGy,ChemicalSynthesis,PeptideChemistry |
brandfamily | NovABIochem |
packaging | 1ginGlassbottle(8523460001) |
| 250mginGlassbottle(8523468250) |
shippedin | ambient |
storagetemp. | Storeat+2°Cto+8°C. |
specifications | Colour(visual):whitetoyellowtobeige |
| Appearanceofsubstance(visual):powder |
| Identity(IR):passestest |
| Enantiomericpurity:≥?99.5?%(a/a) |
| Purity(TLC(157A)):≥?98?% |
| Assay(HPLC,area%):≥?98.0?%(a/a) |
| Solubility(1?mmolein2mlDMF):clearlysoluble |
| ForTLC-SystemsseeourGeneralCatalog |
Description:
Backgroundinformation
BuildingblockfortheintroductionofselenocysteineduringFmocSPPS[1-3].Selenocysteinederivativescanundergoenantiomerizationduringcouplingandcanformdehydroalanineandβ-piperidinylalaninecontainingsideproductsduringsubsequentchainelongation[3].Therefore,activationmethods,suchasHBTUorPyBOPwhichinvolvetheadditionofatertiary,baseshouldbeavoidedforaddtionoftheSecandallsubsequentresidues.
Cleavageandside-chaindeprotectionofSec-containingpeptidescanbeeffectedusingtFA-m-cresol-thioanisole-EDT-water(80:5:5:5:5)[2]orTFA-water-DCM-TIS(89:5:51)at4°C[3].AstheSe-pMeOBzlbondisstabletoTFA,theseemthodsresultinformationofthecorrespondingSev(pMeOBzl)peptide.
PeptidescontainingtwoSec(pMeOBzl)residuescanbeoxidizeddirectlytothecorrespondingselenocystinylpeptidesbytreatmentwith5-10%DMSOinTFA[1-3].
Safety:
Storageclass
10-13Otherliquidsandsolids
WGK
WGK3highlywaterendangering
Disposal
3
RelativelyunreactiveorganicreagentsshouldbecollectedincontainerA.Ifhalogenated,theyshouldbecollectedincontainerB.ForsolidresiduesusecontainerC.