2470

L-Cystine

• Synonym(e): L-Cystine, (Cys)₂
• Empirische Formel (Hill-System): C₆H₁₂N₂O₄S₂
• CAS-Nummer: 56-89-3
• Molekulargewicht: 240.30
• UNSPSC Code: 12352209
• NACRES: NA.25
• MDL number: MFCD00064228

Eigenschaften

• assay: ≥98% (Macro-Kjeldahl method)
• Quality Segment: 100
• form: crystalline powder, crystals
• optical activity: [α]20/D -218 to -224°, c = 2 in 1 M HCl
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• color: white
• anion traces: chloride (Cl^-): ≤0.02%, sulfate (SO₄^2-): ≤0.02%
• cation traces: As: ≤1 ppm, NH₄⁺: ≤0.02%, heavy metals: ≤10 ppm
• shipped in: ambient
• storage temp.: 15-25°C
• SMILES string: S(SC[C@H]([N+H3])C(=O)[O-])C[C@H]([N+H3])C(=O)[O-]
• InChI: 1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
• InChI key: LEVWYRKDKASIDU-IMJSIDKUSA-N

Beschreibung

General description

Non-essential amino acid for human development. Has an optimal pH of 5.0-6.5.

Preparation Note

Solubility may be enhanced by lowering the pH to <2.0 or raising the pH to >8.0.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Standard Handling (A)

Sicherheitshinweise

• Lagerklasse: 11 - Combustible Solids
• Was ist los?: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable