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CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid

CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid

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    L-Cysteine C3H7NO2S


    CAS 52-90-4 L-Cysteine


    99% min L-Cysteine

  • Purity
    99% Min
  • Other Names
    L- а- Amino-b-mercaptopropionic Acid
  • Molecular Formula
  • Molecular Weight
  • CAS NO.
  • Place of Origin
  • Brand Name
  • Certification
  • Model Number
  • Minimum Order Quantity
  • Price
    USD (3800-4000)/MT
  • Packaging Details
    25KG CRAFT PAPER BAGS or as per customers' requirement
  • Delivery Time
    Within 3 Weeks
  • Payment Terms
    L/C, D/P, T/T, Western Union, MoneyGram
  • Supply Ability
    3000MT per year

CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid

L-Cysteine CAS 52-90-4 C3H7NO2S L-Cys L- а- Amino-b-mercaptopropionic acid

Basic Information

Model Number: HMHT0018
Chemical formula: C3H7NO2S
Molecular weight: 121.16
Melting point: 220 ºC
Boiling point: 293.9 ° C at 760 mmHg
Specific rotation: 8.75 º (C=12, 2N HCL)
Water solubility: 280 g/L (25 ºC)
Storage conditions: 2-8 ºC
Appearance: white crystalline powder


Technical Specifications


CAS 52-90-4
EINECS 200-158-2
chemical formula C3H7NO2S
molecular weight one hundred and twenty-one point one six
InChI InChI=1/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m0/s1
melting point 220℃
boiling point 293.9 °C at 760 mmHg
Specific rotation 8.75 º(C=12, 2N HCL)
Water solubility 280 g/L (25℃)
Storage conditions 2-8℃
susceptibility Sensitive to light
appearance White crystalline powder


Packaging Types


25KG CRAFT PAPER BAGS or as per customers' requirement


CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid 0


1. In cosmetics: it is used to produce hair perm essence, sunscreen, perfume, hair tonic, etc. This kind of advanced hair perm essence and cold perm essence, which replace thioacetic acid with cysteine, has the advantages of easy perm, easy hair retention, soft but not messy, and can also be used to prepare sunscreen and hair perfume;
2. In medicine: cysteine is mainly used for liver medicine, antidote, expectorant and other medical drugs. Cysteine and its derivatives can be used for detoxification of liver poisoning, antipyretic and analgesic, ulcer treatment, fatigue recovery, infusion and comprehensive amino acid preparations, especially for expectoration; Treatment of bronchitis and phlegm.
3. In terms of food: bread fermentation promoter and fresh-keeping agent. Cysteine is used as fermentation assistant, antioxidant and stabilizer for milk powder and fruit juice, and nutritional additive for pet food;
4. L-cysteine can be used as raw material for the production of N-acetyl-L -, carboxymethyl cysteine and other cysteine derivatives.
5. Accelerate the formation of gluten and prevent aging; Used in natural fruit juice to prevent oxidation and browning of VC; It can detoxify acrylonitrile and aromatic acid poisoning. Prevention of radiation damage.

Storage/Transport Information


Stored in a dry, cool, and dark place.

Company Profile

CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid 1


Wuxi High Mountain Hi-tech Development Co., Ltd is a professional industrial company engaged in special chemical production, technology research & development, and import & export. The company focuses on the production, trade, and research & development of various chemical products.

Since establishment, the company has been concentrating on constructing an international marketing network and optimizing supply chain management, where we have established a long-term strategic cooperation relationship with numerous large enterprises at home and abroad. Relying on our wide business channels and professional experience, we are more skillfully providing products of stable but differentiated quality, along with flexible, highly efficient & considerate service to satisfy our partner at more competitive pricing.


Efficiently treating our customers as partners with sincerity, specialization and satisfaction is our managerial principle. Attributed to the backup of a dedicated technical team, filled with wide and profound knowledge and practice in chemicals and world trade for 20 years, the company owns rich experience in product quality control, technical solution, chemical logistics organization, packaging optimization, port operation, etc., which accounts for its first-class cost control management and ensures to maintain the overwhelming competitive advantage over others. In line with the principle of sharing the preferential cost and joint development, the company has formed an interesting community for years with its customers at home and abroad. Sincerely to build up a pleasant mutual trust, cooperative, win-win, and value-added sustainable partnership is what we are achieving to grow together with you!

CAS 52-90-4 L-Cysteine C3H7NO2S L-Cys L- а- Amino-B-Mercaptopropionic Acid 2




Q1: May I get one sample before placing an order?
Re: Yes, Samples are available. For normal products, samples are for free and you just need to bear the freight;


For those high-value products, you just need to freight and certain product cost. When we both cooperate for some time or when you are our VIP customer, a free sample will be offered when you need it.


Q2: Which payment is available for your company?
Re: T/T, L/C, or Ali trade insurance. You can choose the one which is convenient for you.


Q3: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT, etc.) or by air. Usually, it will cost 3-5days that you can get the goods after delivery. For large quantity products, shipping by sea is worthwhile. It will cost days to weeks to come to your destination port, which depends on where the port is.


Q4: Is there any possible to use my appointed label or package?
Re: Yes. If needed, we'd like to use a label or package according to your requirement.


Q5: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are the basis of one company, so whatever products we provide for you all are qualified. We will have the goods tested and provide COA before delivery for sure.

Q6:Is the price on this page correct?

Re: The listed price is only for reference, for the latest price, pls contact us directly.