30089

L-cisteina

≥98.5% (RT), suitable for HPLC, BioUltra

• Sinonimo/i: Acido (R)-2-amino-3-mercaptopropionico
• Formula condensata: HSCH₂CH(NH₂)CO₂H
• Numero CAS: 52-90-4
• Peso molecolare: 121.16
• Beilstein: 1721408
• Numero CE: 200-158-2
• Numero MDL: MFCD00064306
• Codice UNSPSC: 12352209
• eCl@ss: 32160406
• ID PubChem: 57648406
• NACRES: NA.26

Proprietà

• product name: L-cisteina, BioUltra, ≥98.5% (RT)
• Nome Commerciale: BioUltra
• Livello qualitativo: 200
• Saggio: ≥98.5% (RT)
• Forma fisica: powder or crystals
• Attività ottica: [α]20/D +8.0±0.5°, c = 5% in 5 M HCl
• tecniche: HPLC: suitable
• Impurezze: insoluble matter, passes filter test; ≤0.5% foreign amino acids
• Residuo alla calcinazione: ≤0.05% (as SO₄)
• Perdita: ≤0.05% loss on drying, 20 °C (HV)
• Colore: white
• Punto di fusione: 240 °C (dec.) (lit.)
• Solubilità: 1 M HCl: 1 M at 20 °C, clear, colorless
• Anioni in tracce: chloride (Cl^-): ≤100 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Cationi in tracce: 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
• Assorbanza UV: λ: 260 nm A_max: 1.5; λ: 280 nm A_max: 0.2
• Stringa SMILE: 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; XUJNEKJLAYXESH-REOHCLBHSA-N

Descrizione

Applicazioni

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.

Azioni biochim/fisiol

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 recettore glutammatergico NMDA.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: dust mask type N95 (US), Eyeshields, Gloves