Date published: 2026-4-5

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S-sulfo-L-cysteine sodium (CAS 7381-67-1)

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Alternate Names:
H-Cys(SO3H)-OH &sdot sodium salt
Application:
S-sulfo-L-cysteine sodium is a useful cysteine derivative for proteomics research
CAS Number:
7381-67-1
Molecular Weight:
223.20
Molecular Formula:
C3H6NO5S2•Na
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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S-sulfo-L-cysteine sodium, a modified amino acid, is used in various research applications due to its unique chemical properties. It serves as an analogue of cysteine in studies aimed at understanding the role of cysteine residues in proteins under oxidative conditions, which is essential for elucidating cellular defense mechanisms against oxidative stress. Because of its enhanced stability in aqueous solutions compared to cysteine, it is frequently employed in experiments requiring precise control over redox states in biochemical systems. Researchers also utilize this compound in protein structure and function analyses to assess the impact of post-translational modifications, specifically those involving sulfur-containing amino acids. S-sulfo-L-cysteine sodium is additionally applied in molecular modeling to predict protein interactions without the complications introduced by disulfide bond dynamics.


S-sulfo-L-cysteine sodium (CAS 7381-67-1) References

  1. The small molecule harmine regulates NFATc1 and Id2 expression in osteoclast progenitor cells.  |  Egusa, H., et al. 2011. Bone. 49: 264-74. PMID: 21504804
  2. S-Sulfocysteine simplifies fed-batch processes and increases the CHO specific productivity via anti-oxidant activity.  |  Hecklau, C., et al. 2016. J Biotechnol. 218: 53-63. PMID: 26654938

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

S-sulfo-L-cysteine sodium, 500 mg

sc-296296
500 mg
$697.00

S-sulfo-L-cysteine sodium, 5 g

sc-296296A
5 g
$1264.00