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C8755 Sigma-Aldrich

L-Cystine

≥98% (TLC), crystalline

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

  •  eCl@ss 32160406

  •  PubChem Substance ID 24893101

  •  NACRES NA.26

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Properties

Related Categories Allium cepa (Onion), Allium sativum (Garlic), Aloe Vera, Amino Acid, Amino Acids,
Quality Level   200
biological source   human hair
assay   ≥98% (TLC)
form   crystalline
application(s)   cell analysis: suitable
  peptide synthesis: suitable
color   white to off-white
mp   >240 °C (dec.) (lit.)
solubility   1 M HCl: 50 mg/mL, clear, colorless to faintly yellow
storage temp.   room temp
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

Application

L-Cystine has been used in in vitro cystine solubility assay to identify potential drugs that influence cystine solubility. It is also used as a supplement of phosphate-buffered saline to slice and wash periprosthetic tissues.

Packaging

1 kg in poly bottle

100, 500 g in poly bottle

Biochem/physiol Actions

Cysteine is the source of disulfide linkages in proteins and has a role in sulfur transport. It undergoes rapid oxidation to form cystine at physiological pH. L-cystine is crucial for oxygen production and low density lipoprotein modification by arterial smooth muscle cells. It also has a role in the synthesis of glutathione.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles
Peer-Reviewed Papers
15

References

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