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L-cysteine manufacturer AJI

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CAS No.:

52-90-4

Grade:

USP/AJI/FCC/EP grade

Content:

99.8%

Port:

Lianyungang

Packaging:

25kgs per drum

Price valid (until):

2025-01-02

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Xinyi Yixin Biotechnology.,LTD

Company Type:

Manufactory

Location:

China

Qualification:

Main Products:

amino acid,L-cysteine,acetyl cysteine,cystine,L-leucine,L-tyrsosine

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Xinyi Yixin Biotechnology CO.,LTD is a professional amino acid manufacturer in China.

L-Cysteine is our leading product.

L-cysteine is as a protein amino acid. One of the main functions of l-cysteine is the promotion of stomach lining health and also the correction of situations where the absorption of essential nutrients from food sources takes place.

Product: L-Cysteine

CAS NO.: 52-90-4

Molecular Formula: C₃H₇NO₂S

Molecular Weight: 121.16

Conforms to: USP, AJI

Contact me to get free samples

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.

Yixin Amino acids series:

Product name	Cas No.	Product name	Cas No.
L-Cystine	56-89-3	L-Lysine L-Aspartic Acid	27348-32-9
L-Leucine	61-90-5	L-Lysine L-Glutamic Acid	5408-52-6
L-Tyrosine	60-18-4	Potassium L-Glutamate	19473-49-5
L-Cysteine Hydrochloride Monohydrate	7048-4-6	L-Histidine Monohydrochloride	5934-29-2
L-Cysteine Hydrochloride Anhydrous	52-89-1	L-L-Histidine	71-00-1
N-Acetyl-L-Leucine	1188-21-2	L-Arginine	74-79-3
N-Acetyl-L-Cysteine	616-91-1	L-Arginine Hydrochloride	1119-34-2
N-Acetyl-L-Tyrosine	537-55-3	L-Arginine L-Aspartic Acid	7675-83-4
L-Cysteine Base	52-90-4	L-Arginine L-Glutamic Acid	4320-30-3
L-Asparaginc Monohydrate	5794-13-8	L-High-Purity Valine	72-18-4
L-Asparaginc Anhydrous	70-47-3	Potassium L-Aspartate	14007-45-5
L-Glutamic Acid	56-86-0	Magnesium L-Aspartate	215533-00-9
L-L-Glutamic Acid Hydrochloride	135-15-8	Calcium L-Aspartate	39162-75-9
L-Lysine Base	56-87-1	Sodium L-Aspartate	323194-76-9
L-Lysine 50% Aqueous Solution	56-87-1	Zinc L-Aspartate	36393-20-1
DL-Lysine Base	70-54-2	Manganess L-Aspartate
DL-Lysine 50% Aqueous Solution	70-54-2	L-Glycine Magnesium	1483-68-7
Compound Amino Acid Powder 20%	/	L-Glycine Manganess	14281-77-7
Compound Amino Acid Powder 45%	/	Amino Acid Liquid	/
Compound Amino Acid Powder 80%	/	OEM	/

Factory enviroment

Shop L-cysteine manufacturer AJI-Detailed Image 1

FAQ

Q: How long is your delivery time?

A: Generally it is 1-2 weeks..

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What's your MOQ ?

A: For the high value product, our MOQ starts from 25kg.

Q: Is there a discount ?

A: Yes, for larger quantity, we always support with better price.

Q: How to confirm the Product Quality before placing orders ?

A: Our products conforms to the internation standard, such as USP, CP, FCC. We can also send you the samples for test. After you confirmed the samples, we will move to the next step for cooperation.

Q: How to start orders or make payments ?

A: You can send our your Purchase order ( if your company has ), or just send a simple confirmation by email or by Trade Manager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.

Q: How do you treat quality complaint ?

A: We tested each batch before delivery and only qualified product will be delivery, in case you find any problem about the quality when you received and tested, send email to us, and enclose the photo of the products and 3rd party test reports, We negotiate to resolve these issues, recall or exchange goods, or compensate.

Q: why we choose you ?

A : We ensure ingredient purity, on-time delivery, process efficiency and the technical documents you require.

(1) quality: meet even exceed what you expect.

(2) prices: competitive

(3) service: one stop shop solution, respond soon, delivery fast, share the market information, share the new application of the product.

Certificates

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

Categories:

Amino Acids and Proteins

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 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|151.34 Å² [M+Na]+ [CCS Type: DT, Method: stepped-field]|144.47 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|113 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|144 Å² [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)

See More L-(+)-Cysteine Properties 

Hazard Identification

Classification of the substance or mixture

Acute toxicity - Category 4, Oral

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)
Signal word	Warning
Hazard statement(s)	H302 Harmful if swallowed
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

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.

See More L-(+)-Cysteine Safety Data Sheet 

Seller Information

Business Type: Manufactory
Main Products: amino acid,L-cysteine,acetyl cysteine,cystine,L-leucine,L-tyrsosine
Location: No.188 Jingyi Road, Tangdian Industrial Park, Xinyi City, Jiangsu Province, 221400China
Payment Terms: TT against copy of documents,D/P,L/C,D/A,O/A,TT against B/L draft before shipment,100% TT in advance
Average lead Time: 10
Total Annual Revenue: $10 million-$25 million
Total Employees: 201-300
Year of Establishment: 2012

Established in 2000,Xinyi Yixin Biotechnology Co., Ltd is a private enterprises specially engaged in the the manufacture of amino acid products. It covers an area of 100000 square meters. Over the past years, we have been developing with the science and technology as our guiding principle, and paying much attention to developing new products. On the basis of preferential policies towards the biochemical industry and good market prospect, we have developed into a multi-functioned biochemical enterprises with the annual output of 300-ton L-cystine, 100-ton L-arginine, 300-ton L-cysteine monohydrate, 100-ton L-cysteine anhydride, 100-ton L-Leucine, 50-ton L-Cysteine Anhydride,10000-ton amino acid powder, taking the elevation of economic profit as the center.

In the fierce market competition, we have been solidly grasped the operating policies of " Market Orientation; Strict Management; Hard Work for Business Creation; High Quality and Efficiency; Practice Innovation; Development and Progress. " and established a good organization for our enterprise on the basis of "Quality First, Customers First". Over the years, besides for the friendly cooperation with a large quantity of customers at home, we also have win the praise of foreign customers and signed many long-term goods-supplying contracts with them. Certified to ISO9001, we have been operating in accordance with the "demands of Quality Management System", in order to ensure that our products and service reach the stipulated quality level.

Our leading product:

No.	Product name	CAS NO.
1	L-Lysine Base	56-87-1
2	L-Lysine 50% Aqueous Solution	56-87-1
3	DL-Lysine Base	70-54-2
4	DL-Lysine 50% Aqueous Solution	70-54-2
5	L-Lysine L-Aspartic Acid	27348-32-9
6	L-Lysine L-Glutamic Acid	5408-52-6
7	Potassium L-Glutamate	19473-49-5
8	L-Histidine Monohydrochloride	5934-29-2
9	L-Histidine	71-00-1
10	L-Arginine	74-79-3
11	L-Arginine Hydrochloride	1119-34-2
12	L-Arginine L-Aspartic Acid	7675-83-4
13	L-Arginine L-Glutamic Acid	4320-30-3
14	High Purity L-Valine	72-18-4
15	Potassium L-Aspartate	14007-45-5
16	Magnesium L-Aspartate	215533-00-9
17	Calcium L-Aspartate	39162-75-9
18	Sodium L-Aspartate	323194-76-9
19	Zinc L-Aspartate	36393-20-1
20	Manganess L-Aspartate
21	Glycine Magnesium	1483-68-7
22	Glycine Manganess	14281-77-7
23	L-Cysteine Hydrochloride Monohydrate	7048-4-6
24	L-Cysteine Hydrochloride Anhydrous	52-89-1
25	L-Cystine	56-89-3
26	L-Leucine	61-90-5
27	L-Tyrosine	60-18-4
28	N-Acetyl L-Leucine	1188-21-2
29	N-Acetyl L-Cysteine	616-91-1
30	N-Acetyl L-Tyrosine	537-55-3
31	L-Cysteine Base	52-90-4
32	L-Asparagine Monohydrate	5794-13-8
33	L-Asparagine Anhydrous	70-47-3
34	L-Glutamic Acid	56-86-0
35	L-L-Glutamic Acid Hydrochloride	135-15-8
36	Complex amino acid powder	For feed or fertilizer

Inquiry History

45 Inquiries

Country	Product	Purchase Quantity	Date Posted
India	L-cysteine	5.00 KG	Dec 2, 2025
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-Cysteine	1.00 KG	Oct 8, 2024
India	L Cyteine	25.00 KG	May 21, 2026
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	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
India	L-Cysteine	1.00 KG	Nov 14, 2024
India	L-Cysteine	1.00 KG	Oct 28, 2024
India	L-Cysteine	10 KG	Jun 11, 2024

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L-cysteine manufacturer AJI

Product Description

Seller Information

Inquiry History

Classification of the substance or mixture

GHS label elements, including precautionary statements

Other hazards which do not result in classification

Precautions for safe handling

Conditions for safe storage, including any incompatibilities

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