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L-Cysteine CAS 52-90-4 (jerryzhang001@chembj.com)

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  Post Date: Apr 20,2017
  Expiry Date: Apr 20,2018
  Detailed Description: Cas No. :52-90-4 Payment Method: T/T; Western Union; Moneygram and Bitcoin
L-Cysteine CAS 52-90-4

Product Name: L-Cysteine;
Synonyms: (R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Alanine, 3-mercapto-;

CAS: 52-90-4;
MF: C3H7NO2S;
MW: 121.16;
EINECS: 200-158-2;
Product Categories: API intermediates;Cysteine [Cys, C];Amino Acids;Amino Acids and Derivatives;alpha-Amino Acids;Antioxidant;Biochemistry;Nutritional Supplements;L-Amino Acids;Amino Acids;amino;

Melting point: 220 °C (dec.)(lit.);
alpha: 8.75 º (c=12, 2N HCl);
refractive index: 8.8 ° (C=8, 1mol/L HCl);
storage temp.: Store at RT.

HS Code: 29309012;

Description:

L-cysteine, also known as cysteine, is a non-essential amino acid of the human body. Amino acids are protein components and protein is the material basis of life. Ranging from human to microorganism, all consist of protein. Protein is composed of peptides, and peptide chain is composed of amino acids. Different proteins are composed of peptide chains in different order and length. Genes related to heredity are in fact amino acid chains in different orders.
L-cysteine is closely related to cysteine, and two molecules of cysteine can form a cysteine. Cysteine is relatively unstable and easy to become cysteine. Cystine can also re-generate cysteine. These two both are sulfur-containing amino acids, which affect the formation of skin and can be used for detoxification.
L-cysteine is present in keratin, which is the major protein that makes up nails, toenails, skin and hair. L-cysteine can help the production of collagen, and can maintain the skin's elasticity and texture. It is also related to the protein of digestive enzymes, and cysteine can supply -SH group to many important enzymes, such as succinate dehydrogenase and lactate dehydrogenase.
L-cysteine is mainly used in the field of cosmetics, medicine and food. In cosmetics, it can be used for the preparation of perm essence, sunscreen, hair-restoring perfume and other nourishing hair essence. In the field of medicine, it is mainly used for the preparation of methyl cysteine, ethyl cysteine, acetyl cysteine, cysteine methyl ester, cysteine ethyl ester as well as comprehensive amino acid preparations and other drugs. Cysteine can be used as protective agent for radiation damage. In food, L-cysteine can be used as bread fermentation aid (ripening agent), stabilizer of milk powder and fruit juice antioxidants and nutrition of pet food and so on.

Usage:

(1) L-cysteine can be used as bread improver, nutritional supplements, antioxidants and color fixative. It can also be applied for curing acrylonitrile and aromatic acid poisoning, preventing radiation damage and treating bronchitis and phlegm. L-cysteine can absorb alcohol and convert it into acetaldehyde to alleviate a hangover.
According to GB 2760-96 regulations, L-cysteine is allowed for preparing spices.
(2) L-cysteine can be used for the treatment of eczema, urticaria, freckles and other skin diseases. And its series products are widely used in medicine, food and cosmetics industry
(3) L-cysteine can be used for biochemical research and as the antidote for hepatitis, liver poisoning, radiopharmaceutical poisoning, antimony poisoning, etc.
(4) L-cysteine is mainly used for medicine, cosmetics, biochemical research and so on. It can be used in the bread material to accelerate the formation of gluten and to promote fermenting and depanning, as well as to prevent aging. It can be used in natural fruit juices to prevent oxidation of vitamin C and to prevent fruit juice from becoming brown. The product has detoxification effect and can be used for curing acrylonitrile poisoning and aromatic acidosis. This product also has the role of preventing the human body from radiation damage. It can be used as bronchitis drugs, especially as phlegm drugs (mostly in the form of acetyl L-cysteine methyl ester salt). In cosmetics, it is mainly used as cosmetic water, perm solution, anti-sun cream and other skin care.
(5) L-cysteine is widely used in medicine, food and cosmetics industries.
Application
L-cysteine is mainly used in medicine, cosmetics, biochemical research and so on. It can be used in the bread material to accelerate the formation of gluten and to promote fermenting and depanning, as well as to prevent aging. It can also be used for the treatment of eczema, urticaria, freckles and other skin diseases.
(6) L-cysteine can be used as the receptor agonists of NMDA glutamate.

  CAS Registry Number:

52-90-4
  Synonyms: ;Cysteine, L-;L-(+)-Cysteine;L-Alanine, 3-mercapto-;L-Cys;NSC 8746;L-Cysteine;(+)-2-Amino-3-mercaptopropionic acid;L-beta-mercaptoalanine;L-Cysteine Free Base Crystalline;(S)-(-)-Cysteine;L-Cysteine Base;H-Cys-OH;
  Molecular Formula: C3H7NO2S
  Molecular Weight: 121.15
  Molecular Structure: 52-90-4 L(+)-Cysteine
  Hazard Symbols:  Xn:Harmful;
  Risk Codes: R22:;
R36/37/38:;
  Safety Description: S26:;
S37/39:;

  Company: Nanjing Bangnuo Biotechnology Co., Ltd.     [ China ]        
  Contact: Jerry Zhang
  Tel: 86-25-52198306
  Fax:
  Email: jerryzhang001@chembj.com
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