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L-Cystine, 99%

Product Code. 10273990 Shop All Thermo Scientific Chemicals Products
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Quantity:
100 g
500 g
2.5 kg
Packaging:
Plastic Bottle
Unit Size:
100g
2.5kg
500g
Product Code. Quantity Packaging unitSize
10273990 100 g Plastic Bottle 100g
10619094 500 g Plastic Bottle 500g
15189163 2.5 kg Plastic Bottle 2.5kg
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Product Code. 10273990

Brand: Thermo Scientific Acros 111801000

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90.82 EUR valid until 2026-02-13
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Description

L-Cystine, CAS # 56-89-3 is the left-handed enantiomer of the sulphur-containing amino acid, cystine, purified for use in molecular biology and analytical chemistry applications. | CAS: 56-89-3 | C6H12N2O4S2 | 240.292 g/mol

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

General description

  • L-Cystine is a derivative of the amino acid, cysteine
  • Cystine is not considered one of the twenty common amino acids, but it has a role as a metabolite in some species
  • May act as an antioxidant in form and reduce aging, inflammation, and tissue damage

Applications

  • Used as an additive to cell culture media
  • Intended for biochemistry applications such as HPLC
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 56-89-3
Molecular Formula C6H12N2O4S2
Molecular Weight (g/mol) 240.292
MDL Number MFCD00064228
InChI Key LEVWYRKDKASIDU-IMJSIDKUSA-N
Synonym l-cystine, cystine, l-dicysteine, l-cystin, cystine acid, cysteine disulfide, oxidized l-cysteine, beta,beta'-dithiodialanine, h-cys-oh 2, l-cysteine disulfide
PubChem CID 67678
ChEBI CHEBI:16283
IUPAC Name (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid
SMILES C(C(C(=O)O)N)SSCC(C(=O)O)N

Specifications

Ammonium 200ppm max.
Color White to Beige
Chloride 200ppm max.
Chlorine (Cl) 200ppm max.
Heavy Metals (as Pb) 10ppm max.
Infrared Spectrum Authentic
Iron (Fe) 10ppm max.
Assay Percent Range 99%
Loss on Drying 0.5 % max. (105°C, 3 hrs)
Packaging Plastic Bottle
Linear Formula [-SCH2CH(NH2)CO2H]2
Beilstein 04, 507
Specific Rotation −209° to −224° (20°C, 589nm) (c=2, 1 M HCl) on dried substance
Sulfate 300ppm max.
Merck Index 15, 2779
Sulfated Ash 0.1 % max.
Quantity 100 g
Formula Weight 240.3
Percent Purity ≥98.5% (Acid)
Physical Form Fused Solid, Crystals or Chunks
Chemical Name or Material L-Cystine
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