30089

L-Cysteine

BioUltra, ≥98.5% (RT)

• Sinónimos: (R)-2-Amino-3-mercaptopropionic acid
• Fórmula lineal: HSCH₂CH(NH₂)CO₂H
• Número de CAS: 52-90-4
• Peso molecular: 121.16
• Beilstein: 1721408
• Número de EC: 200-158-2
• Número MDL: MFCD00064306
• eCl@ss: 32160406
• ID de la sustancia en PubChem: 57648406
• NACRES: NA.26

Propiedades

• línea de producto: BioUltra
• Nivel de calidad: 200
• ensayo: ≥98.5% (RT)
• formulario: powder or crystals
• actividad óptica: [α]20/D +8.0±0.5°, c = 5% in 5 M HCl
• technique(s): HPLC: suitable
• impurezas: insoluble matter, passes filter test; ≤0.5% foreign amino acids
• residuo de ign.: ≤0.05% (as SO₄)
• pérdida: ≤0.05% loss on drying, 20 °C (HV)
• color: white
• mp: 240 °C (dec.) (lit.)
• solubilidad: 1 M HCl: 1 M at 20 °C, clear, colorless
• trazas de anión: chloride (Cl^-): ≤100 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• trazas de catión: 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
• Absorción UV: λ: 260 nm A_max: 1.5; λ: 280 nm A_max: 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

Descripción

Aplicación

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.

Acciones bioquímicas o fisiológicas

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.

NMDA glutamatergic receptor agonist.

Información de seguridad

• Código de clase de almacenamiento: 13 - Non Combustible Solids
• WGK: WGK 1
• Equipo de protección personal: dust mask type N95 (US), Eyeshields, Gloves