missing translation for 'onlineSavingsMsg'
Learn More
  1. Home
  2. Products
  3. Biochemical Reagents
  4. Amino Acids
  5. Thermo Scientific Chemicals L-Cysteine, 99+%

Thermo Scientific Chemicals L-Cysteine, 99+%

Product Code. 10679263
Click to view available options
Quantity:
5 g
25 g
100 g
500 g
Packaging:
Glass Bottle
Plastic Bottle

Description

L-Cysteine, CAS # 52-90-4, is an essential sulfur-containing amino acid related to cystine. It plays an important role in protein synthesis. It is a precursor to the glutathione antioxidant system and iron-sulfur clusters.

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-Cysteine is an essential amino acid and is one of the building blocks required for the synthesis of proteins
  • This compound participates in the glutathione antioxidant system and iron-sulfur clusters

Applications

  • It plays a role in the production of flavors such as meat flavor obtained by reacting with sugars
  • This compound is also applied to the cleavage of disulfide bonds in keratin, the main protein in nails, skin, and hair
  • In chemical research, it is used as a crucial raw material in the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine, and L-cysteine base
  • L-Cysteine is a component of the antioxidant glutathione and has been shown to be involved in the metabolism of essential biochemicals such as coenzyme A, heparin, and biotin
  • In vitro studies demonstrated that this compound can neutralize the activity of acetaminophen. In addition, due to its antioxidant activity this compound can protect the nervous system.
  • This compound can also bind to several metal cofactors in enzymes
TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 52-90-4
Molecular Formula C3H7NO2S
Molecular Weight (g/mol) 121.154
MDL Number MFCD00064306
InChI Key XUJNEKJLAYXESH-REOHCLBHSA-N
Synonym l-cysteine, cysteine, cystein, half-cystine, r-cysteine, thioserine, r-2-amino-3-mercaptopropanoic acid, l-+-cysteine, l-cystein, 2r-2-amino-3-sulfanylpropanoic acid
PubChem CID 5862
ChEBI CHEBI:17561
IUPAC Name (2R)-2-amino-3-sulfanylpropanoic acid
SMILES C(C(C(=O)O)N)S

Specifications

Ammonium 1000ppm max.
pH 4.5 to 6 (2.5% aq. soln.)
Color White
Chlorine (Cl) 400ppm max.
Heavy Metals (as Pb) 10ppm max.
Infrared Spectrum Authentic
Assay Percent Range 98+%
Loss on Drying 0.5% max. (105°C, 3 hrs)
Packaging Plastic Bottle
Linear Formula HSCH2CH(NH2)CO2H
Specific Rotation +8° to +9.5° (20°C, 589nm) (c=5, 2N HCl)
Sulfate 300ppm max.
Sulfated Ash 0.1% max.
Specific Rotation Condition +8.75 (20.00°C c=12,2N HCl)
Quantity 500 g
Formula Weight 121.15
Percent Purity ≥99.0% (on dried substance)
Physical Form Crystalline Powder or Crystals
Chemical Name or Material L-Cysteine
Show More Show Less

Safety and Handling

Product Identifier
  • L-Cysteine

RUO – Research Use Only

Product Content Correction

Your input is important to us. Please complete this form to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Thank You! Your feedback has been submitted. Fisher Scientific is always working to improve our content for you. We appreciate your feedback.