Merck
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168149

Sigma-Aldrich

L-Cysteine

97%

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Synonym(s):
(R)-2-Amino-3-mercaptopropionic acid
Linear Formula:
HSCH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
121.16
Beilstein:
1721408
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.22

Assay

97%

form

solid

optical activity

[α]20/D +6.5±1.5°, c = 2 in 5 M HCl

optical purity

ee: 96% (GLC)

reaction suitability

reaction type: solution phase peptide synthesis

mp

240 °C (dec.) (lit.)

solubility

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

application(s)

peptide synthesis

SMILES string

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

InChI key

XUJNEKJLAYXESH-REOHCLBHSA-N

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This Item
C735295437C5360
L-Cysteine 97%

Sigma-Aldrich

168149

L-Cysteine

L-Cysteine from non-animal source, BioReagent, suitable for cell culture, ≥98%

Sigma-Aldrich

C7352

L-Cysteine

L-Cysteine certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Supelco

95437

L-Cysteine

L-Cysteine

SAFC

C5360

L-Cysteine

form

solid

form

crystalline powder

form

-

form

crystalline powder

optical activity

[α]20/D +6.5±1.5°, c = 2 in 5 M HCl

optical activity

-

optical activity

-

optical activity

-

mp

240 °C (dec.) (lit.)

mp

240 °C (dec.) (lit.)

mp

240 °C (dec.) (lit.)

mp

240 °C (dec.) (lit.)

solubility

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

solubility

H2O: 25 mg/mL

solubility

-

solubility

H2O: 25 mg/mL

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

400

General description

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

Biochem/physiol Actions

NMDA glutamatergic receptor agonist.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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L-Cysteine, Free Base

D-Cystine 98%

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L-cysteine functionalized gold nanoparticles for the colorimetric detection of Hg2+ induced by ultraviolet light
Chai F
Nanotechnology, 21(2), 025501-025501 (2009)
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)
Antioxidant effects of sulfur-containing amino acids
Atmaca G
Yonsei Medical Journal, 45, 776-788 (2004)
Eun Young Park et al.
Journal of agricultural and food chemistry, 62(26), 6183-6189 (2014-06-01)
The present study examined the impact of the supplementation of glutathione (GSH), γ-L-glutamyl-L-cysteinyl-glycine, on human blood GSH levels. Healthy human volunteers were orally supplemented with GSH (50 mg/kg body weight). Venous blood was collected from the cubital vein before and
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

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

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