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168149

Sigma-Aldrich

L-cystéine

97%, for peptide synthesis

Synonyme(s) :

Acide (R)-2-amino-3-mercaptopropionique

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2.5 G
26.40 CHF
25 G
29.90 CHF
100 G
73.60 CHF
500 G
349.00 CHF
2.5 KG
1 300.00 CHF

26.40 CHF

Date d'expédition estimée le25 mars 2025

Devis pour commande en gros
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Sélectionner une taille de conditionnement

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2.5 G
26.40 CHF
25 G
29.90 CHF
100 G
73.60 CHF
500 G
349.00 CHF
2.5 KG
1 300.00 CHF

About This Item

Formule linéaire :
HSCH2CH(NH2)CO2H
Numéro CAS:
52-90-4
Poids moléculaire :
121.16
Beilstein:
1721408
Numéro CE :
200-158-2
Numéro MDL:
MFCD00064306
Code UNSPSC :
12352209
eCl@ss :
32160406
ID de substance PubChem :
24850236
Nomenclature NACRES :
NA.22

26.40 CHF

Date d'expédition estimée le25 mars 2025

Devis pour commande en gros

Nom du produit

L-cystéine, 97%

Niveau de qualité

200

Essai

97%

Forme

solid

Activité optique

[α]20/D +6.5±1.5°, c = 2 in 5 M HCl

Pureté optique

ee: 96% (GLC)

Capacité de réaction

reaction type: solution phase peptide synthesis

Pf

240 °C (dec.) (lit.)

Solubilité

hydrochloric acid: 5% in 1N, clear, colorless

Application(s)

peptide synthesis

Chaîne SMILES 

N[C@@H](CS)C(O)=O

InChI

1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1

Clé InChI

XUJNEKJLAYXESH-REOHCLBHSA-N

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Description générale

L-cysteine is a sulfur-containing non-essential amino acid.[1] Its ability to reduce colitis symptoms is being assessed for potential use in treating inflammatory bowel disease (IBD).[2]
Naturally occurring non-essential amino acid.

Application

L-cysteine can be used as a cysteine source to prepare L-cysteine functionalized gold nanoparticles for use as probes in the colorimetric detection of Hg2+ in aqueous solution.[3]

Actions biochimiques/physiologiques

Il s'agit d'un agoniste des récepteurs glutamatergiques de type NMDA.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

dust mask type N95 (US), Eyeshields, Gloves

Faites votre choix parmi les versions les plus récentes :

Certificats d'analyse (COA)

Lot/Batch Number
BCCL0006
BCCL0004
BCCK2774
BCCK4081
BCCL0003

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Si vous avez besoin d'une version particulière, vous pouvez rechercher un certificat spécifique par le numéro de lot.

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Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents

L-cysteine supplementation attenuates local inflammation and restores gut homeostasis in a porcine model of colitis
Kim CJ
Biochim. Biophys. Acta Gen. Subj., 1790(10), 1161-1169 (2009)
Xin Li et al.
Journal of diabetes research, 2020, 9589507-9589507 (2020-02-23)
Chronic wounds are a major global health problem with the presence of biofilm significantly contributing to wound chronicity. Current treatments are ineffective in resolving biofilm and simultaneously killing the bacteria; therefore, effective biofilm-resolving drugs are needed. We have previously shown
L-cysteine functionalized gold nanoparticles for the colorimetric detection of Hg2+ induced by ultraviolet light
Chai F
Nanotechnology, 21(2), 025501-025501 (2009)
Antioxidant effects of sulfur-containing amino acids
Atmaca G
Yonsei Medical Journal, 45, 776-788 (2004)
Tanzila Mukhtar et al.
Scientific reports, 10(1), 4625-4625 (2020-03-15)
Neural stem cells (NSCs) generate neurons of the cerebral cortex with distinct morphologies and functions. How specific neuron production, differentiation and migration are orchestrated is unclear. Hippo signaling regulates gene expression through Tead transcription factors (TFs). We show that Hippo
Afficher tous les articles scientifiques apparentés

Articles

Dietary Antioxidants

Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.

Chromatograms

application for HPLC

Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. When I make a L-cysteine solution using this powder, it can be stored for long time or it should be freshly made? And what is the storage conditon of the solution?

    1 answer

    1. This product is soluble in 5% of 1N Hydrochloric Acid. When acidic stock solutions are aliquoted and stored at -20°C, it is stable for up to 1 month.

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