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Home > Cosmetic Ingredient > Antistatic > (-)-Cystine for Sale > L-Cystine ,CAS 56-89-3
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L-Cystine ,CAS 56-89-3

4 Inquiries

Unit Price: Get Latest Price
CAS No.:

56-89-3

Port:

Shang hai

Packaging:

25kg/drum

Price valid (until):

2025-09-22

Company Type:
Manufactory
Location:
China
Qualification:
Main Products:

Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate

  • Product Description

  • Seller Information

  • Inquiry History

  • Description


      Product Detail  


    L-Cystine is an amino acid and intracellular thiol, which plays a critical role in the regulation of cellular processes. L-cystine is the L-enantiomer of the sulfur-containing amino acid cystine. It has a role as a flour treatment agent, a human metabolite, a Saccharomyces cerevisiae metabolite, a mouse metabolite and an EC 1.2.1.12 (aspartate-semialdehyde dehydrogenase) inhibitor. It is a cystine, a L-cysteine derivative and a non-proteinogenic L-alpha-amino acid. It is a conjugate acid of a L-cystine anion. It is an enantiomer of a D-cystine. It is a tautomer of a L-cystine zwitterion.|A covalently linked dimeric nonessential amino acid formed by the oxidation of cysteine. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.|Cystine is not considered one of the 20 amino acids, Cystine is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. Cystine is abundant in many proteins of skeletal tissues and skin, and found in insulin and digestive enzymes chromotrypsinogen A, papain, and trypsinogen. (NCI04)|A covalently linked dimeric nonessential amino acid formed by the oxidation of CYSTEINE. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.

    Items Specifications
    Appearance DryPowder
    Melting Point 260.5℃ (decomp)
    Water Solubility H2O:0.112 g/L (25℃);1 M HCI:100 mg/mL

    (-)-Cystine Use and Manufacturing
    Uses
    L-Cystine is a non-essential amino acid for human development. L-Cystine is formed by the dimerization of two cysteines through the sulfur.Used for biochemical research, preparation of biological culture medium, medicine for the prevention and treatment of hepatitis, radiation injury, various alopecia, and drug poisoning, and also for acute infectious diseases, bronchial asthma, neuralgia, eczema and burns treatment.Used in medicine, cosmetics, food additives, etc.

    Basic Info
    Product Name:

    (-)-Cystine

    Other Name:

    L-Cystine;Cystine,L-;Bis(β-amino-β-carboxyethyl) disulfide;Cystine acid;β,β′-Diamino-β,β′-dicarboxydiethyl disulfide;Dicysteine;3,3′-Dithiobis(2-aminopropanoic acid);β,β′-Dithiodialanine;Cystine;L-Cysteine disulfide;Propanoic acid,3,3′-dithiobis[2-amino-,[R-(R*,R*)]-;(-)-Cystine;L-Cystin;L-(-)-Cystine;Oxidized L-cysteine;[R-(R*,R*)]-3,3′-Dithiobis[2-aminopropanoic acid];l-Cystine;L-Alanine,3,3′-dithiobis-;NSC 13203;24645-67-8;154605-69-3

    CAS No.:

    56-89-3

    Molecular Formula:

    C6H12N2O4S2

    InChIKeys:

    InChIKey=LEVWYRKDKASIDU-IMJSIDKUSA-N

    Molecular Weight:

    240.30000

    Exact Mass:

    240.30

    EC Number:

    206-486-2

    UNII:

    48TCX9A1VT

    DSSTox ID:

    DTXSID2046418

    NCI Thesaurus Code:

    C29610

    HScode:

    2930901000

    Categories:

    Antistatic

    Characteristics
    PSA:

    177.24000

    XLogP3:

    -6.3

    Appearance:

    DryPowder

    Density:

    1.677 g/cm3

    Melting Point:

    260.5 °C (decomp)

    Boiling Point:

    468.2ºC at 760 mmHg

    Flash Point:

    237ºC

    Refractive Index:

    1.653

    Water Solubility:

    H2O: 0.112 g/L (25 ºC);1 M HCl: 100 mg/mL

    Storage Conditions:

    Store at RT.

    PKA:

    1None

    Dissociation Constants:

    1

    Collision Cross Section:

    149.4 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|145 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|149.4 Ų [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|151.2 Ų [M+Na]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|143 Ų [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|147.3 Ų [M+Na-2H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|148.1 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards]|144.39 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|150.08 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|151.81 Ų [M+Na]+ [CCS Type: DT, Method: stepped-field]|147.3 Ų [M-2H+Na]-

    Hazard Identification

    Classification of the substance or mixture

    Not classified.

    GHS label elements, including precautionary statements

    Pictogram(s) No symbol.
    Signal word

    No signal word

    Hazard statement(s)

    none

    Precautionary statement(s)
    Prevention

    none

    Response

    none

    Storage

    none

    Disposal

    none

    Other hazards which do not result in classification

    no data available

    Handling and Storage

    Precautions for safe handling

    Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

    Conditions for safe storage, including any incompatibilities

    Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

  • Seller Information
    Business Type:

    Manufactory

    Main Products:

    Agrochemicals,Daily Chemicals,Catalysts & Chemical Auxiliary Agents,Extract,Inorganic Chemicals,Organic Intermediate

    Location:

    9F/TOWER B DANING MUSIC PLAZA NO.777, WANRONG ROAD JINGAN, DISTRICT, SHANGHAI, R.P. CHINA

    Payment Terms:

    TT against copy of documents,D/P,L/C,TT against B/L draft before shipment,100% TT in advance

    Average lead Time:

    14

    Total Annual Revenue:

    $2.5 million-$5 million

    Total Employees:

    5-10

    Year of Establishment:

    2022

  • Inquiry History
    4 Inquiries
    Country Product Purchase Quantity Date Posted
    India

    L-CYSTINE

    1.00 KG Mar 31, 2026
    India

    L-CYSTINE

    1.00 KG Aug 7, 2025
    Australia

    L-Cystine

    100.00 KG Jun 1, 2025
    India

    L-CYSTEINE 

    50.00 KG Mar 25, 2025
    Post an enquiry for this product
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