L-Cystine

Category:Intermediates > Pharmaceutical Intermediates
Product Name:L-Cystine
CAS No.:56-89-3
Standard:USP, BP, EP
Company:Changzhou Comwin Fine Chemicals Co., Ltd.

Basic Info
  • Grade: Pharmaceutical Grade

    Factory Location: Jiangsu

    Main Sales Markets: North America,Central/South America,Western Europe,Eastern Europe,Asia

  • Monthly Production Capacity: 20000kgs

    Packaging Information: 25kg/drum

  • Delivery Lead Time: 2weeks after order

    Sample Provided: yes

    Payment Terms: T/T

    L-Cystine

    Chemical Name

    L-Cystine

    CAS No.

    56-89-3

    Molecular Formula

    C6H12N2O4S2

    Molecular Weight

    240.3

    Molecular Structure

    Storage

    Store in a tightly closed container. Store in a cool, dry, well-ventilated  area away from incompatible substances. Keep away from metals. Keep  refrigerated. Store protected from moisture. Store protected from light and air.

     

    SPECIFICATION

    ITEMS

    SPECIFICATION

    Appearance

    White crystals or crystalline powder

    Identification

    Conforms with the reference spectrum

    Specific rotation

    -215~-225°

    Chloride

    ≤ 0.02%

    Sulfate

    ≤ 0.02%

    Iron

    ≤ 10ppm

    Heavy metals

    ≤ 10ppm

    Organic Impurities

    individual impurity <0.2%

    total impurities < 2.0%

    Loss on drying

    ≤ 0.20%

    Residue on ignition

    ≤ 0.10%

    Assay

    98.5~101.5%

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