EMAIL THIS PAGE TO A FRIEND
779539 Sigma-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/REAXYS Number 1728094

  •  EC Number 200-296-3

  •  MDL number MFCD00064228

  •  PubChem Substance ID 329768048

  •  NACRES NA.22

Purchase

Properties

Related Categories Amines, Building Blocks, C6, Chemical Synthesis, Nitrogen Compounds - Organic Building Blocks,
Quality Level   200
grade   produced by Wacker Chemie AG, Burghausen, Germany
assay   ≥98.5%
optical activity   [α]/D -224 to -218°
impurities   ≤0.02% 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-): ≤200 ppm
  sulfate (SO42-): ≤300 ppm
cation traces   As: ≤1 ppm
  Fe: ≤10 ppm
  Pb: ≤5 ppm
suitability   clear, colorless for appearance of solution
SMILES string   N[C@@H](CSSC[C@H](N)C(O)=O)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

Description

General description

L-Cystine is an amino acid mainly found in the keratin of hair.

Application

L-Cystine can be used as a starting material for the synthesis of d-biotin, aromatic-bridged cystine cyclic peptides (cystinophanes), chiral imidazolidine disulfides and biodegradable PEGylated gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) L-cystine copolymers.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

Please Enter a Lot Number

Meet Synthia - Retrosynthesis Sofware
Protocols & Articles
Peer-Reviewed Papers
15

References

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?