Premium Ingredient Co.,Ltd

Premium Ingredient Co.,Ltd

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  • Company Name: Premium Ingredient Co.,Ltd
  • Street: Shanguan
  • City: Jiangyin
  • Province/state: Jiangsu
  • Country/region: China
  • Contact Person: Ms.Amelia Bai
  • Department: Sales
  • Tel: 86-510-86995770
  • Fax: 86-510-86993298
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L-Cystine

  • CAS No:56-89-3 (2R)-2-amino-3-[[(2R)-2-amino-2-carboxyethyl]disulfanyl]propanoic acid
    Molecular Structure

    Detailed Description

    supplier: premium ingredient co.,ltd
    Product Name: L-Cystine
    Cas No.: 56-89-3
    Quality Standard: AJI92
    Description: white crystals or crystalline powder. Tasteless.
    Practically insoluble in water.


    Specific rotation -215 to -225°
    State of solution
    (transmittance) Clear and colorless
    Not less than 98.0%
    Chloride 0.020%
    Ammonium Not more than 0.02%
    Sulfate Not more than 0.020%
    Iron Not more than 20ppm
    Heavy metals(Pb) Not more than 10ppm
    Arsenic Not more than 1ppm
    Other Amino Acids Conforms
    Loss on drying Not more than 0.20%
    Residue on ignition
    (sulfated) Not more than 0.10%
    Assay 98.5 to 101.0%
    PH 5.0 to 6.5


    Storage: Preserve in tight containers at controlled room temperature.
    Recommended limit: 2 years

  • L-Cystine
  • L-Cystine