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30089

Sigma-Aldrich

L-cisteína

BioUltra, ≥98.5% (RT)

Sinónimos:

Ácido (R)-2-amino-3-mercaptopropiónico

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About This Item

Fórmula lineal:
HSCH2CH(NH2)CO2H
Número de CAS:
52-90-4
Peso molecular:
121.16
Beilstein/REAXYS Number:
1721408
EC Number:
200-158-2
MDL number:
MFCD00064306
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
57648406
NACRES:
NA.26

product line

BioUltra

Quality Level

200

assay

≥98.5% (RT)

form

powder or crystals

optical activity

[α]20/D +8.0±0.5°, c = 5% in 5 M HCl

technique(s)

HPLC: suitable

impurities

insoluble matter, passes filter test
≤0.5% foreign amino acids

ign. residue

≤0.05% (as SO4)

loss

≤0.05% loss on drying, 20 °C (HV)

color

white

mp

240 °C (dec.) (lit.)

solubility

1 M HCl: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
NH4+: ≤500 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in 1 M HCl

UV absorption

λ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.2

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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Categorías relacionadas

Application

L-Cysteine has been used in quenching of unreacted maleimide during antibody grafting. It has also been used in the preparation of nitrosocysteine stock solution, that has been employed to induce S-nitrosylation to achieve reversible cysteine modification.

Biochem/physiol Actions

Cysteine is one of the functional amino acids that regulates metabolism for growth, reproduction, maintenance and immunity. Cysteine provides the disulfide linkage in proteins. It is directly associated with the transport of sulfur. Taurine, a metabolic product of cysteine acts as an antioxidant and controls the cellular redox state. Cysteine is involved in the formation of hydrogen sulfide that is utilized as a signaling molecule.
Agonista del receptor glutamatérgico NMDA.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Journal of Controlled Release : Official Journal of the Controlled Release Society, 156(2), 118-127 (2011)
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Jia Guo
Nature Protocols, 9(1), 64-75 (2014)
Amino acids: metabolism, functions, and nutrition
Guoyao Wu
Amino Acids, 37(1), 1-17 (2009)
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Nature, 511(7511), 616-620 (2014-07-22)
Tumour oncogenes include transcription factors that co-opt the general transcriptional machinery to sustain the oncogenic state, but direct pharmacological inhibition of transcription factors has so far proven difficult. However, the transcriptional machinery contains various enzymatic cofactors that can be targeted
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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
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Artículos

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.

Protocolos

GC Analysis of Amino Acids (as TBDMS Derivatives) on SLB®-5ms (20 m x 0.18 mm I.D., 0.18 μm), Fast GC Analysis

Separation of L-Alanine; Glycine; L-Valine; L-Leucine; L-Isoleucine; L-Proline; L-Methionine; L-Serine; L-Threonine; L-Phenylalanine; L-Aspartic acid; L-4-Hydroxyproline; L-Cysteine; L-Glutamic acid; L-Asparagine; L-Lysine; L-Glutamine; L-Histidine; L-Tyrosine; L-Tryptophan; L-Cystine

Chromatograms

application for HPLC

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