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L-Cystine Pharmacy grade

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CAS No.:

56-89-3

Grade:

Pharmaceutical Grade

Content:

99%

Port:

QINGDAO

Packaging:

25kg/2kg Cardboard Drum

Price valid (until):

2017-08-31

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Hengshui Changhao Biological Technology Co., Ltd.

Company Type:

Manufactory

Location:

China

Payment Terms:

D/P,L/C

Average Lead Time:

60 days

Qualification:

Main Products:

taurine

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Product Description
Seller Information
Inquiry History

Description

Product Description

Product Name
Color	yellow	Application	Gypsum Board
Appearance	flowability powder	Certification	SGS
Lignin Content	40-60%	Validity	2 years
Water	less than 3%	MOQ	1 MT
Water Insolubles	less than 1.5%	Price	USD315-USD340
Air Content	less than 3.5%	Port	Qingdao

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Product Application

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Packaging & Shipping

(1)25KG/Drum

ECHEMI Editorial Reference

L-Cystine is an amino acid and intracellular thiol, which plays a critical role in the regulation of cellular processes.
DryPowder|Solid
L-cystine is the L-enantiomer of the sulfur-containing amino acid cystine. It has a role as a flour treatment agent, a human metabolite, a Saccharomyces cerevisiae metabolite, a mouse metabolite and an EC 1.2.1.12 (aspartate-semialdehyde dehydrogenase) inhibitor. It is a cystine, a L-cysteine derivative and a non-proteinogenic L-alpha-amino acid. It is a conjugate acid of a L-cystine anion. It is an enantiomer of a D-cystine. It is a tautomer of a L-cystine zwitterion.|A covalently linked dimeric nonessential amino acid formed by the oxidation of cysteine. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.|Cystine is not considered one of the 20 amino acids, Cystine is a sulfur-containing derivative obtained from oxidation of cysteine amino acid thiol side chains. It functions as an antioxidant and protects tissues against radiation and pollution, slowing the aging process. It also aids protein synthesis. Cystine is abundant in many proteins of skeletal tissues and skin, and found in insulin and digestive enzymes chromotrypsinogen A, papain, and trypsinogen. (NCI04)|A covalently linked dimeric nonessential amino acid formed by the oxidation of CYSTEINE. Two molecules of cysteine are joined together by a disulfide bridge to form cystine.

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:

Amino Acids and Proteins

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:
taurine

Location:
200meters of South Yangcun Transformer Substation,Jizao Road,Jizhou City,Hebei Province 053200,China.

Payment Terms:
D/P,L/C

Average lead Time:
60 days

Total Annual Revenue:
Less than $1 million

We are professional amino acids manufacturer, the main products are L-Lysine HCL, Glycine, DL-Methionine,L-Methionine,L-Threonine, L-Glutamic acid etc. Same time, we also trade other amino acids, vitamins, sweeteners and extractive.

After ten years of rapid development, Changhao company has developed from a small trading company into a modern technology enterprise group with more than 150 employees. The company subordinate Hengshui Changhao Borunke Trading Co., LTD., and has Hangzhou office. The company produces 10000 tons of various amino acids annually. The annual sales revenue is 200 million. Our products are mainly exported to more than 100 countries such as Europe, Africa, Asia, North America, South America and Oceania. Foreign countries have more than 3,000 square meters of exclusive storage. Exports generate about $10 million a year in foreign exchange. At the same time supply the domestic market, the product coverage domestic 32 provinces, the city, the autonomous region.

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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