Description

• General description: A building block for the introduction of thiaproline (Thz) during Fmoc SPPS. Thz has been employed as a masked cysteine residue to prevent self-ligation during native chemical ligation reactions (NCL) of peptide thioesters bearing an N-terminal Cys residue [6]. Once ligation is complete, the N-terminal Cys residue of the resultant peptide is unmasked by ring-opening the Thz residue by treatment with methoxyamine, thereby enabling its subsequent ligation to another peptide thioester fragment. Associated Protocols and Technical Articles Cleavage and Deprotection Protocols for Fmoc SPPS Literature references [1] M. Villain, et al. in ′Peptides: The wave of the future, Proc. Second Int.& 17th American Peptide Symposium′, M. Lebl & R A. Houghten (Eds), American peptide Society, 2001, pp. 107.
• Analysis Note: Colour (visual): white to slight yellow to beigeAppearance of substance (visual): powderIdentity (IR): passes testEnantiomeric purity: ≥ 99.5 % (a/a)Purity (TLC(011A)): ≥ 98 %Assay (HPLC, area%): ≥ 99.0 % (a/a)Solubility (1 mmole in 2 ml DMF): clearly solubleTo see the solvent systems used for TLC of Novabiochem® products please click here.
• Legal Information: Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany