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L-Cystine, Fermentation

Name: L-Cystine, Fermentation
Brand: Weihe, NHU
SKU: pr2408051688
Price: 8 USD
Availability: InStock

TDS 4 Inquiries

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CAS No.:

56-89-3

Grade:

Food Grade

Content:

99.6%

Port:

Shanghai, Qingdao

Brand:

Weihe, NHU

Packaging:

25kg/barrel

Price valid (until):

2025-04-30

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Henan Weihe Biological Engineering Co.,Ltd.

Company Type:

Manufactory

Location:

China

Qualification:

Main Products:

N-Acetyl-L-Cysteine,L-Cysteine,L-Cysteine HCL Monohydrate,L-Cysteine HCL Anhydrous

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Product Description
Seller Information
Inquiry History

Description

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L-Cystine Detail

L-Cystine is an amino acid with many important applications, including.

Medical field,

L-Cystine is used to treat diseases such as radiopharmaceutical poisoning, antimony poisoning, hepatitis, serum sickness, etc.
As a mucolytic expectorant, it is used to treat respiratory diseases such as pulmonary complications, acute and chronic bronchitis, etc.
After surgery, it is used to thin thick bronchial sputum and prevent coughing.
It is used to treat keratitis and as a stabilizer in amino acid infusion.
It has anti-inflammatory, analgesic, and anti-bacterial and cancer cell growth effects.

Food industry,

As a food flavoring agent and coloring agent, it is used in bread, oil, food preservation, etc.
As a bread additive, it is used to improve food texture and maintain food freshness.
As an antioxidant and preservative for oils and fats, it prevents food from browning.

Cosmetic field,

It is used to produce whitening cosmetics, regulate melanin production, and has antioxidant and moisturizing functions.
Feed industry:

As a feed additive, it provides essential amino acids to promote animal growth and health.

Other applications,

Widely used in biochemical research, such as protein structure research, enzyme catalysis reaction and bioanalysis.
As a chemical raw material, it is used to produce a variety of organic compounds and drugs.

Items	Specifications
Appearance	This product is w hite or nearly white crystalline powder .
Specific Optical R otation	-218 °~ -224 °
Other Amino acids	Total impurities ≤ 0.5%
Solubility	This product is almost insoluble in water or ethanol, dissolved in dilute hydrochloric acid or sodium hydroxide test solution.
Identification A	Specific optical rotation
IdentificationB Infrared absorption spectrophotometry	The comparison between the infrared spectrum of the test sample and the reference sample was consistent
Identification C Thin-layer chromatography	The principal spot in the chromatogram obtained with the test solution is simliar in position, colour adn size to the principal spot in the chromatogram obtained with the reference solution
Identification D	Turbidity or a white precipitate develops within 3 min.
PH	5.0-6.5
Solution color	Clear, colorless
Transmittance	≥98.0%
Chloride	≤0.02%
Sulfate	≤0.02%
Loss on drying	≤0.2%
Residue on ignition	≤0.1%
Assay(on the dried basis)	98.5-101.0%

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Who we are?

Weihe Biotech has Anhui Weihe production base, and Henan Weihe Biological Engineering Co.,Ltd. It is a national high-tech enterprise and a national technological innovation demonstration enterprise specializing in the research and development, production, and sale of fermented Amino acids and Vitamin nutritional fortifiers.
Company has strong technical force, has a reputation in the amino acid industry of technical experts and capable and efficient management team, the use of plant raw material fermentation method to produce a series of small varieties of amino acids. Its production process through green transformation and physical purification, without harmful chemical residues, the waste liquid wastewater produced through comprehensive utilization into waste into treasure, the formation of a circular industrial chain.

What could we do?

1. Support sample orders for your trial production. And after the sample approved, we can negotiate for commercial order.

2. Provide customized materials according to your specification demands.

3. Various payment methods are available.

4. Our products are sold worldwide, like Europe, North&South America, Asia and pacific area as well as Africa, we are aiming to establish long term cooperation with our clients.

5. 7 DAYS 24 HOURS service. In time and clear response to customers questions. 100% guaranteed aftersales service, we are happy to provide guidance or solutions during your consumption.

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Certificates

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:

Nutrition Supplements

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:

Collision Cross Section:

149.4 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with Agilent tune mix (Agilent)]|145 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine]|149.4 Å² [M+H]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|151.2 Å² [M+Na]+ [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|143 Å² [M-H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|147.3 Å² [M+Na-2H]- [CCS Type: DT, Method: single field calibrated with ESI Low Concentration Tuning Mix (Agilent)]|148.1 Å² [M+H]+ [CCS Type: TW, Method: calibrated with polyalanine and drug standards]|144.39 Å² [M-H]- [CCS Type: DT, Method: stepped-field]|150.08 Å² [M+H]+ [CCS Type: DT, Method: stepped-field]|151.81 Å² [M+Na]+ [CCS Type: DT, Method: stepped-field]|147.3 Å² [M-2H+Na]-

See More (-)-Cystine Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
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.

See More (-)-Cystine Safety Data Sheet 

Seller Information

Business Type:
Manufactory

Main Products:
N-Acetyl-L-Cysteine,L-Cysteine,L-Cysteine HCL Monohydrate,L-Cysteine HCL Anhydrous

Location:
Building 1, Greenland Binhu International city, South Unive

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

Average lead Time:
7

Total Annual Revenue:
$25 million-$50 million

Total Employees:
51-100

Year of Establishment:
2020

Henan Weihe Biological Engineering Co., Ltd. is a modern enterprise focusing on Research&Development and manufacture of Amino Acids and derivatives. Professional production of L-Cysteine, L-Cysteine Hydrochloride, N-Acetyl-L-Cysteine and other products. Henan Weihe, with a strict quality assurance system and has passed ISO 9001, as well as KOSHER and HALAL certification. Products confirm with the international and domestic quality standards, such as USP, BP, EP, AJI, FCC, etc.

Henan Weihe Biological Engineering Co., Ltd. relies on superb technical team, advanced production equipment, strict management system, fine manufacturing process, stable product quality, and has won the trust and praise of customers with its multi-variety management characteristics, more professional and modern praise.

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

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L-Cystine, Fermentation

Product Description

Seller Information