30089

L-Cysteine

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

• 동의어(들): (R)-2-Amino-3-mercaptopropionic acid
• Linear Formula: HSCH₂CH(NH₂)CO₂H
• CAS Number: 52-90-4
• Molecular Weight: 121.16
• Beilstein: 1721408
• EC Number: 200-158-2
• MDL number: MFCD00064306
• UNSPSC 코드: 12352209
• eCl@ss: 32160406
• PubChem Substance ID: 57648406
• NACRES: NA.26

속성

• 제품명: L-Cysteine, BioUltra, ≥98.5% (RT)
• 제품 라인: BioUltra
• 분석: ≥98.5% (RT)
• 양식: powder or crystals
• 광학 활성: [α]20/D +8.0±0.5°, c = 5% in 5 M HCl
• 기술: HPLC: suitable
• 불순물: insoluble matter, passes filter test; ≤0.5% foreign amino acids
• 무기 잔류물: ≤0.05% (as SO₄)
• 손실: ≤0.05% loss on drying, 20 °C (HV)
• 색상: white
• mp: 240 °C (dec.) (lit.)
• solubility: 1 M HCl: 1 M at 20 °C, clear, colorless
• 음이온 미량물: chloride (Cl^-): ≤100 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• 양이온 미량물: 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 흡수: 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

설명

애플리케이션

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.[1][2]

생화학적/생리학적 작용

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.[3]

NMDA glutamatergic receptor agonist.

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: dust mask type N95 (US), Eyeshields, Gloves