High Purity Nutrient Supplement L-Cysteine Powder CAS 52-90-4 L-Cysteine

Basic Info

Model NO.	CAS 52-90-4
Colour	White
Product Name	L-Cysteine
Other Name	L-Cysteine Powder
Molecular Weight	121.16
Melting Point	240 °c (DEC.) (Lit.)
Storage Temp.	Store Below +30°c
Usage	as a Nutrient and Dietary Supplement
Purity	99%Min
Grade	Pharmaceutical Grade
Delivery Time	Within 24 Hours After Receiving The Payment
MOQ	10 Gram
Shipping Method	UPS, FedEx, TNT, EMS Ect
Payment Ways	Western Union, Money Gram, Bitcoin and T/T
Suitable for	Adult
Customized	Non-Customized
Certificate	GMP, ISO 9001
Transport Package	Foil Bag
Specification	1kg/bag
Trademark	yuanmeng
Origin	China
HS Code	2934990002
Production Capacity	1000kg/Month

Product Description

Product Name: L-CysteineSynonyms: (R)-2-Amino-3-mercaptopropanoic acid;3-mercapto-l-alanin;alpha-amino-beta-mercaptopropionicacid;alpha-Amino-beta-thiolpropionic acid;alpha-amino-beta-thiolpropionicacid;Cystein;half-cysteine;L-Cysteine - animal originCAS: 52-90-4MF: C3H7NO2SMW: 121.16EINECS: 200-158-2Melting point: 240 °C (dec.) (lit.)Storage temp.: Store below +30°C

Description:Cysteine (abbreviated as Cys or C) is an α-amino acid with the chemical formula HO2CCH(NH2)CH2SH. It is a semi - essential amino acid, which means that it can be biosynthesized in humans. The thiol side chain in cysteine often participates in enzymatic reactions, serving as a nucleophile. The thiol is susceptible to oxidization to give the disulfide derivative cystine, which serves an important structural role in many proteins. When used as a food additive, it has the E number E920.Usage:The cysteine thiol group is nucleophilic and easily oxidized. The reactivity is enhanced when the thiol is ionized, and cysteine residues in proteins have pKa values close to neutrality, so are often in their reactive thiolate form in the cell. Because of its high reactivity, the thiol group of cysteine has numerous biological functions.Precursor to the antioxidant glutathioneDue to the ability of thiols to undergo redox reactions, cysteine has antioxidant properties. Cysteine's antioxidant properties are typically expressed in the tripeptide glutathione, which occurs in humans as well as other organisms.Precursor to iron-sulfur clustersCysteine is an important source of sulfide in human metabolism. The sulfide in iron-sulfur clusters and in nitrogenase is extracted from cysteine, which is converted to alanine in the process.Metal ion bindingBeyond the iron - sulfur proteins, many other metal cofactors in enzymes are bound to the thiolate substituent of cysteinyl residues. Examples include zinc in zinc fingers and alcohol dehydrogenase, copper in the blue copper proteins, iron in cytochrome P450, and nickel in the [NiFe]-hydrogenases . The thiol group also has a high affinity for heavy metals, so that proteins containing cysteine, such as metallothionein, will bind metals.Roles in protein structureIn the translation of messenger RNA molecules to produce polypeptides, cysteine is coded for by the UGU and UGC codons. Cysteine has traditionally been considered to be a hydrophilic amino acid, based largely on the chemical parallel between its thiol group and the hydroxyl groups in the side-chains of other polar amino acids. However, the cysteine side chain has been shown to stabilize hydrophobic interactions in micelles to a greater degree than the side chain in the non-polar amino acid glycine, and the polar amino acid serine .

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1. Rich experience: Our company is a professional production leading factory in China in pharmaceutical area of many years. 2. Top quality: High quality guaranteed, once any problem is found, the package would be reshipped for you .3. Security Shipping: Shipping by express (FedEx,UPS,DHL,EMS), by air. The most professional forwarder would be recommanded for you.4. Fast delivery: We have stock, so we can delivery quickly once payment is received.5. Quality service: We will give you warm after-sale service,if any question we will reply you within 24 hours.6. Competitive prices: A discount would be given when you make a large order.

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Lead time	Within 8 hours upon receipt of payment
Package picture	Photos of package would be offered to tell apart the items
Tracking number	Offered once it is released
Shipping time	3-7 working days (Door-to-Door)
After-sale service	24/7 Online for any problems

About Us

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Hubei Yuanmeng Biological Technology, which is located in Wuhan, China. We are specializing in the exportation of APIs, and plant extracts ect.Our products has been exported to America, Australia, Brazil, the Europe, Middle East and other areas in the world. We have established close and stable cooperative relationships with over 200 domestic pharmaceutical and chemical enterprises. With high quality and favorable price, we′ re pleased to get your inquiry and we will reply you as soon as possible.We will continue to forge ahead and strive hard for excellence, keep on exploring and progressing to develop more high-tech products with superior quality, to satisfy increasing demand of the clients, and create more value for our partners!

 

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Hubei Yuanmeng Biological TechnologyRoom 3820, Building 2, Vanke Golden City, Hongshan District, Wuhan, Hubei, ChinaFiona Wei