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Skin Whitening Anti Aging Drugs Powder 99% Purity L Cysteine CAS 52-90-4

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Skin Whitening Anti Aging Drugs Powder 99% Purity L Cysteine CAS 52-90-4

Brand Name : Jusheng Brand
Model Number : 52-90-4
Certification : ISO, 9001, USP
Place of Origin : China
MOQ : 10grams
Price : Discount is possible if your order is big enough
Payment Terms : T/T in advance, Money Gram, Western Union, Bank Transfer.
Supply Ability : 1000kg/month
Delivery Time : within 2 working days
Packaging Details : 10g, 20g, 50g , 100g, 500g. 1kg, 10kg
CAS : 52-90-4
Alias : L-Cysteine, (R)-2-Amino-3-mercaptopropanoic acid
Apparence : Almost White Crystalline Powder
Purity : 99%
Packing : As your requirement
Stock : Enough stock
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Nutritional Supplements L-Cysteine CAS 52-90-4 Skin Whitening and Anti Aging Powder

Quick detail


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 point220 °C (dec.)(lit.)
alpha8.75 º (c=12, 2N HCl)
refractive index8.8 ° (C=8, 1mol/L HCl)
storage temp.Store at RT.
solubilityH2O: 25 mg/mL
Water Solubility280 g/L (25 ºC)
Stability:Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.


L-Cysteine Description


  1. 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.
  2. 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.
  3. L-cysteine is present in keratin, which is the major protein that makes up nails, toenails, skin and hair.
  4. 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 Usage


((( Health Benefits )))

  • L-cysteine is an important precursor for antioxidants such as glutathione – a product metabolized in the liver. Glutathione is essential for the breakdown of toxins in the body, such as alcohol. L-cysteine is also the precursor for other important antioxidants that help ward off cancer by decreasing the incidence of cell mutation.
  • Cancer is caused by the replication of genetic mistakes (mutations) that go unnoticed by the cell’s recognition system. In healthy cells, mutations are caught and denatured before replication continues.
  • If mutations are not caught, then the on/off mechanisms that monitor cell formation may be disrupted allowing uncontrolled proliferation of cells into tumors. A healthy cell rich in amino acids such as L-cysteine, has a better chance of sensing and discarding such mutations.
  • L-cysteine benefits can also include improved heart and circulatory system health. Inflammation plays a key role in heart health. The inflammation response causes a cascade of events to bring fluids, proteins and cells to damaged tissues.


Hair Growth


  • Human hair is rich in two basic amino acid compounds, l-cystine and l-tyrosine, with l-cystine comprising up to 14% of the hair. When hair is dissolved (hydrolyzed) in hydrochloric acid, these compounds can be separated and recovered. L-cystine is actually comprised of two l-cysteine amino acids that are joined together, and when this bond is broken using a hydrolysis reaction, l-cysteine is released.
  • L-cysteine is an essential part of hair growth and strength but of course it is not enough to sustain hair health on its own. It is the body and the cells within the body that utilize nutrients like L-cysteine and build them into structures like hair. Therefore, we must always be conscious of the things we eat and eat a well-balanced diet avoiding or limiting known toxins.
  • Cysteine is a fundamental ingredient in the synthesis of collagen. Collagen, in turn, is the most important element for the production of keratin in hair. Collagen is also required for supporting healthy skin and nails.
  • A study conducted with women suffering from diffuse hair loss found that taking cysteine in combination with millet seed extract and pantothenic acid can lead to a normalization in hair growth after just three months of therapy.

L-Cysteine COA


AppearanceWhite Crystals or Crystalline Powder
Specification Rotation+8.3º~+9.5º
State of Solution≥95.0%
Chloride(Cl)≤ 0.04%
Ammonium≤ 0.02%
Sulfate(SO4)≤ 0.030%
Iron(Fe)≤10ppm
Arsenic(As2o3)≤1ppm
Other Amino AcidsConforms
Heavy Mental(Pb)≤10ppm
Loss on Drying≤ 0.50%
Residue on Ignition≤ 0.10%
Assay98.0%~101.0%
PH4.5~5.5








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