Date published: 2026-2-13

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Fmoc-S-methyl-L-cyseteine (CAS 138021-87-1)

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Alternate Names:
Fmoc-L-Cys(Me)-OH
Application:
Fmoc-S-methyl-L-cyseteine is an Fmoc protected cysteine derivative
CAS Number:
138021-87-1
Purity:
≥98%
Molecular Weight:
357.42
Molecular Formula:
C19H19NO4S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Fmoc-S-methyl-L-cyseteine plays a significant role in the field of chemistry, particularly in the synthesis of peptides. It is frequently used in solid-phase peptide synthesis, where its Fmoc group provides a protective mechanism, allowing for the sequential addition of amino acids to form peptides without unwanted side reactions. The sulfur atom of the methyl-cyseteine side chain is often involved in the study of redox mechanisms and metal-binding properties due to its potential to mimic natural systems. In materials science, Fmoc-S-methyl-L-cyseteine can be involved in the creation of self-assembling peptides, which are of interest for the development of nanofibers and hydrogels. Researchers also use this compound to investigate post-translational modifications, where the methylation of cyseteine residues can affect protein function and stability.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Fmoc-S-methyl-L-cyseteine, 1 g

sc-285836
1 g
$26.00

Fmoc-S-methyl-L-cyseteine, 5 g

sc-285836A
5 g
$92.00