8.52190
Fmoc-Gln(Trt)-Ser(psiMe,Mepro)-OH
Novabiochem®
Synonym(s):
Fmoc-Gln(Trt)-Ser(psiMe,Mepro)-OH
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About This Item
Empirical Formula (Hill Notation):
C45H43N3O7
Molecular Weight:
737.84
UNSPSC Code:
12352209
NACRES:
NA.22
Recommended Products
Quality Level
product line
Novabiochem®
assay
≥95% (TLC)
≥97.0% (HPLC)
form
powder
reaction suitability
reaction type: Fmoc solid-phase peptide synthesis
manufacturer/tradename
Novabiochem®
application(s)
peptide synthesis
functional group
hydroxyl
storage temp.
2-8°C
General description
This pseudoproline dipeptide is undoubtedly the most effective and simplest to use tool for overcoming aggregation and enhancing peptide quality in Fmoc SPPS for peptide containing the Gln-Ser dipeptide motif. It consists of a dipeptide in which the serine residue has been reversibly protected as a structure-breaking proline-like TFA-labile oxazolidine. The reason the pseudoproline residue is introduced as a dipeptide is because it avoids the need to acylate the hindered oxazolidine nitrogen. This has the added advantage of extending the peptide chain by two residues in one step. The serine residue is regenerated during the normal TFA-mediated cleavage reaction.
Associated Protocols and Technical Articles
Cleavage and Deprotection Protocols for Fmoc SPPS
Overcoming Aggregation in Fmoc SPPS
Associated Protocols and Technical Articles
Cleavage and Deprotection Protocols for Fmoc SPPS
Overcoming Aggregation in Fmoc SPPS
Linkage
Replaces: 05-20-1115
Analysis Note
Color (visual): white to slight yellow to beige
Appearance of substance (visual): powder
Identity (IR): passes test
Optical rotation α 25/D (c=1 in methanol): -39.0 - -33.0 °
Purity (TLC(157A)): ≥ 95 %
Purity (TLC(CMA2)): ≥ 95 %
Assay (HPLC, area%): ≥ 97.0 % (a/a)
Acetate (IC): ≤ 0.1 %
Ethyl acetate (HS-GC): ≤ 2.0 %
To see the solvent systems used for TLC of Novabiochem® products please click here.
Appearance of substance (visual): powder
Identity (IR): passes test
Optical rotation α 25/D (c=1 in methanol): -39.0 - -33.0 °
Purity (TLC(157A)): ≥ 95 %
Purity (TLC(CMA2)): ≥ 95 %
Assay (HPLC, area%): ≥ 97.0 % (a/a)
Acetate (IC): ≤ 0.1 %
Ethyl acetate (HS-GC): ≤ 2.0 %
To 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
Storage Class
11 - Combustible Solids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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Articles
Learn how to overcome aggregation in Solid Phase Peptide Synthesis
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