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Home > Biochemical Engineering > Amino Acids and Derivatives > L-(+)-Cysteine for Sale > HIgh Quality Nutrition Supplement Powder CAS 52-90-4 L-Cysteine-
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HIgh Quality Nutrition Supplement Powder CAS 52-90-4 L-Cysteine-

48 Inquiries

Unit Price:

$99/G FOB

Get Latest Price
CAS No.:

52-90-4

Grade:

Pharmaceutical Grade

Content:

99%

Port:

hongkong

Brand:

Shengyufan International Trade Co., Ltd.

Packaging:

1kg/bag,25kg/drum,25kg/bag

Price valid (until):

2029-06-12

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

Cosmetic raw material,API,Retatrutide,Tirzepatide,Semaglutide,intermediates

  • Product Description

  • Seller Information

  • Inquiry History

  • Description

    Description

    • The importance of peptides:
    • 1.Customer Satisfaction is our priority and guarantee for the future.
      2.We co-develop products and projects with our partners.
      3.Place of Origin China with Super quality by reasonable price.
      4.When you meet problems in mineral processing, we can provide technical guidance.
      5.We will ship the goods that you order from us by EMS, DHL, UPS, or FedEx.We will
      decided to choose which courier depend on Different countries.To find the best way to
      delivery the goods for you.
      6.We will ship the goods within 5days after get your payments.If you want to cancel or
      change order, please tell me within 24hours after you finish the payment...So we both
      can make the best of the bad bargain.
      Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is
      7-15days after payment
      7.if you have any other questions to consult me.please not hesitate to contact me any times.
      All we want is win-win business. Send us your inquiries, you will get it!
    • Shop Cas 56-89-3 L-Cystine--Detailed Image 1



    Quality and Service

    High quality,High credit,Deep development :

    • 1.Customer Satisfaction is our priority and guarantee for the future.
      2.We co-develop products and projects with our partners.
      3.Place of Origin China with Super quality by reasonable price.
      4.When you meet problems in mineral processing, we can provide technical guidance.
      5.We will ship the goods that you order from us by EMS, DHL, UPS, or FedEx.We will
      decided to choose which courier depend on Different countries.To find the best way to
      delivery the goods for you.
      6.We will ship the goods within 5days after get your payments.If you want to cancel or
      change order, please tell me within 24hours after you finish the payment...So we both
      can make the best of the bad bargain.
      Bulk Order: Shipped via sea or air, it's according to your requirement, delivery time is
      7-15days after payment
      7.if you have any other questions to consult me.please not hesitate to contact me any times.
      All we want is win-win business. Send us your inquiries, you will get it!

    Shop Cas 56-89-3 L-Cystine--Detailed Image 2

    Shop Cas 56-89-3 L-Cystine--Detailed Image 3

    Shop Cas 56-89-3 L-Cystine--Detailed Image 4







    Shop Cas 56-89-3 L-Cystine--Detailed Image 5

    1. Rich experience.
    Our company is a professional production leading factory in China in pharmaceutical area of many years,
    our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other country,
    and we have got very good feedback from our customers, we had Established long friendly relations of cooperation.

    2. Great quality, purity and favourable.
    Good quality is one of our secret success, welcome order the samples, MOQ just 1 grams.

    3. Safe and fast delivery.
    We have stock, so we can delivery quickly at the very day when receive the payment.
    We have special way could ship 0.01kg to 3.5kg products a time. We offer melting powder into liquid service. And ship the liquid in special bottles.

    4. Good before after-sales service.
    Before-sales:
    - We would like to offer our most favorable quotation and detailed information about
    product as well as our company.
    - We would like to offer free sample for testing use.

    5.After-sales:
    - We would like to assist buyers in custom clearing through providing necessary documents and information.
    - We would provide the best solution when there is any dispute about product quality.

    Shop Cas 56-89-3 L-Cystine--Detailed Image 6




    Why choose us?


    We are dedicated to providing high-quality peptides at favorable prices.our products exported to over 60 countries and regions around the world, such as the United States, the European Union, the Middle East, Southeast Aisa and South America.
    At the heart of our success is our dedication to building long-term partnerships based on trust, mutual respect, and shared success. Our team of experienced sales and technical professionals works closely with customers to provide personalized solutions, from product selection and customization to technical support and after-sales service. We offer flexible ordering options, competitive pricing, and reliable delivery to ensure that our customers receive the products they need when they need them. Our global distribution network is supported by strategic partnerships with good logistics providers, allowing us to ship products efficiently and safely to destinations around the world. Whether it's a small order or a large-scale shipment, we handle every transaction with the same level of care and attention to detail.

    Constantly strive for high quality products, competitive prices, professional support, effective team, honest cooperation, safe shipment and good after-sales work. Looking forward to build long-term relationship with you.Shop High Purity Research Peptide Powder 5mg Vial Retatrutide-Detailed Image 5

    Shop High Purity Research Peptide Powder 5mg Vial Retatrutide-Detailed Image 6

    Shop High Purity Research Peptide Powder 5mg Vial Retatrutide-Detailed Image 7

    Shop High Purity Research Peptide Powder 5mg Vial Retatrutide-Detailed Image 8



      FAQ


    1.Higher quality products (>=99% purity) for most of peptides and raws., adequate stock and fast delivery competitive price.

    2. Ship worldwide with safe and secure lines: 100% delivery guaranteed. No worry about Customs issues.

    3. Special Service: Drop-shipping if need.

    4. Cheapest prices in the market, unbeatable!

    5. Very reputable in the most famous boards such as Meso Rx forum and Professional muscle forums, with tons of positive reviews and blind lab tests done by our customers.

    6. Many payment options: Credit card, bank transfer, wise, alipay, paysend, apple pay, google pay, wechat, bitcoin

    7.Safe and fast delivery

    1)Parcel can be sent out in 2 working days after payment,tracking number available.

    2)Secure and discreet shipment,various transportation methods for your choice.

    3)Customs pass rate 99%

    Basic Info
    Product Name:

    L-(+)-Cysteine

    Other Name:

    L-Cysteine;Cysteine,L-;Half-cystine;β-Mercaptoalanine;Thioserine;L-(+)-Cysteine;Cysteine;Propanoic acid,2-amino-3-mercapto-,(R)-;Cystein;L-Alanine,3-mercapto-;NSC 8746;(R)-2-Amino-3-mercaptopropanoic acid;(R)-Cysteine;2-Amino-3-mercaptopropionic acid;L-Cys;E 920;(R)-2-Amino-3-mercaptopropanoic acid;(R)-2-Amino-3-sulfanylpropanoic acid;(2R)-2-Amino-3-sulfanylpropanoic acid;2-Amino-3-mercaptopropanoic acid;11: PN: WO2021055880 SEQID: 12 claimed protein;4371-52-2;154605-72-8;1404190-35-7

    CAS No.:

    52-90-4

    Molecular Formula:

    C3H7NO2S

    InChIKeys:

    InChIKey=XUJNEKJLAYXESH-REOHCLBHSA-N

    Molecular Weight:

    121.15800

    Exact Mass:

    121.16

    EC Number:

    200-158-2

    UNII:

    K848JZ4886

    DSSTox ID:

    DTXSID8022876

    NCI Thesaurus Code:

    C29609

    Color/Form:

    Colorless crystals|White crystals

    HScode:

    2930901000

    Characteristics
    PSA:

    102.12000

    XLogP3:

    -2.5

    Appearance:

    DryPowder

    Density:

    1.6666 g/cm3 @ Temp: 45.00 °C

    Melting Point:

    240 °C (decomp)

    Boiling Point:

    293.9ºC at 760 mmHg

    Flash Point:

    131.5ºC

    Refractive Index:

    8.8 ° (C=8, 1mol/L HCl)

    Water Solubility:

    H2O: 280 g/L (25 ºC)

    Storage Conditions:

    Store at RT.

    Vapor Pressure:

    6.73X10-7 mm Hg at 25 deg C (est)

    Toxicity:

    LD50 orally in Rabbit: 1890 mg/kg

    Specific rotation:

    Specific optical rotation: +6.5 deg at 25 °C/D (5 N HCl); +13.0 deg at 25 °C/D (glacial acetic acid)

    PKA:

    1.71None

    Henrys Law Constant:

    Henry's Law constant = 5.30X10-11 atm-cu m/mol at 25 °C (est)

    Dissociation Constants:

    1.71|pK1 1.71 /carboxylic/; pK2 8.33 /amine/; pK3 10.78 /sulfide/

    Collision Cross Section:

    149.57 Ų [M+H]+ [CCS Type: DT, Method: stepped-field]|151.34 Ų [M+Na]+ [CCS Type: DT, Method: stepped-field]|144.47 Ų [M-H]- [CCS Type: DT, Method: stepped-field]|113 Ų [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|144 Ų [M-H]-

    Experimental Properties:

    Readily oxidizes to form a dimeric amino acid, cystine, in which the two cysteines are linked via a disulfide bridge, a common structural feature in proteins. Amino Acids and Proteins, D.M. Greenberg, Ed. (Charles C. Thomas, Springfield, IL, 1951) 950 pp.|In neutral or slightly alkaline aqueous solution it is oxidized to cystine by air. More stable in acidic solutions.|MP (anhydrous): 178 °C (decomposes). Specific optical rotation: +6.53 deg at 25 °C/D (calculated as cysteine) (c = 2 in 5M HCl); solubility >100 (20 °C) g/100 g H2O /L-Cysteine hydrochloride monohydrate/|Hydroxyl radical reaction rate constant = 7.96X10-11cu cm/molecule-sec at 25 °C (est)

    Hazard Identification

    Classification of the substance or mixture

    Acute toxicity - Category 4, Oral

    GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Warning

    Hazard statement(s)

    H302 Harmful if swallowed

    Precautionary statement(s)
    Prevention

    P264 Wash ... thoroughly after handling.

    P270 Do not eat, drink or smoke when using this product.

    Response

    P301+P317 IF SWALLOWED: Get medical help.

    P330 Rinse mouth.

    Storage

    none

    Disposal

    P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.

    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

    Keep container tightly closed in a dry and well-ventilated place. Store under inert gas. Air sensitive. Storage class (TRGS 510): Non Combustible Solids.

  • Seller Information
    Business Type:

    Trader

    Main Products:

    Cosmetic raw material,API,Retatrutide,Tirzepatide,Semaglutide,intermediates

    Location:

    3-1-203 Green Home, No.1 Jianming South Road, Chang'an District, Shijiazhuang City, Hebei Province

    Payment Terms:

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

    Total Employees:

    5-10

    Year of Establishment:

    2025

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

    L-cysteine

    5.00 KG Dec 2, 2025
    India

    L-Cysteine

    1.00 KG Jul 14, 2026
    India

    L-Cysteine

    100.00 KG Jun 7, 2025
    India

    L-Cysteine

    1.00 KG Nov 25, 2025
    India

    L-Cysteine 

    1.00 KG May 13, 2025
    India

    L Cyteine

    25.00 KG May 21, 2026
    India

    L-Cysteine 

    1.00 KG Oct 8, 2024
    India

    L-Cysteine

    100 KG Dec 17, 2025
    India

    L-Cysteine

    1.00 MT Sep 26, 2023
    India

    L-Cysteine

    20.00 MT Dec 13, 2023
    India

    L-Cysteine

    100 KG Jul 29, 2026
    India

    L-Cysteine

    1 KG Feb 24, 2026
    India

    L-Cysteine

    1.00 KG Jan 28, 2026
    India

    L-Cysteine

    2.00 KG Jan 27, 2026
    Slovenia

    L-CYSTEINE

    400 KG Jan 20, 2026
    Egypt

    L-Cysteine

    1000 KG Jan 19, 2026
    India

    L-Cysteine

    1.00 KG Sep 8, 2025
    Pakistan

    L-Cysteine

    50.00 KG May 6, 2025
    India

    L-Cysteine

    1 MT Apr 23, 2025
    India

    L-Cystiene

    10.00 KG Mar 26, 2025
    Post an enquiry for this product
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