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779539 Aldrich

L-Cystine

produced by Wacker Chemie AG, Burghausen, Germany, ≥98.5%

Synonym: (R,R)-3,3′-Dithiobis(2-aminopropionicacid)

  • CAS Number 56-89-3

  • Linear Formula [-SCH2CH(NH2)CO2H]2

  • Molecular Weight 240.30

  •  Beilstein Registry Number 1728094

  •  EC Number 200-296-3

  •  MDL number MFCD00064228

  •  PubChem Substance ID 329768048

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Properties

Related Categories Amines, Building Blocks, C6, Chemical Synthesis, Nitrogen Compounds,
grade   produced by Wacker Chemie AG, Burghausen, Germany
InChI Key   LEVWYRKDKASIDU-IMJSIDKUSA-N
assay   ≥98.5%
optical activity   [α]/D -224 to -218°
impurities   ≤0.020% ammonium
  ≤0.2% ninhidrin positive substances (each)
  ≤10 ppm heavy metals
ign. residue   ≤0.1%
loss   ≤0.2% loss on drying
mp   >240 °C (dec.)(lit.)
anion traces   chloride (Cl-): ≤0.020%
  sulfate (SO42-): ≤0.030%
cation traces   As: ≤1 ppm
  Fe: ≤10 ppm
  Pb: ≤5 ppm
suitability   clear, colorless for appearance of solution

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Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.




Cross-Coupling Guide
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers
15

References

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