Description References
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L-Cystine

Description References
Product Name
L-Cystine
CAS No.
56-89-3
Chemical Name
L-Cystine
Synonyms
NPHN;NPHS1;Cystin;(CYS)2;Nephrin;h-(cys);l-cystin;-Cystine;1-cystine;L-CYSTINE
CBNumber
CB6394079
Molecular Formula
C6H12N2O4S2
Formula Weight
240.3
MOL File
56-89-3.mol
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L-Cystine Property

Melting point:
>240 °C (dec.) (lit.)
alpha 
-224 º(c=2 in 1M HCl)
Boiling point:
468.2±45.0 °C(Predicted)
Density 
1.68
refractive index 
-222.5 ° (C=1, 1mol/L HCl)
storage temp. 
2-8°C
solubility 
1 M HCl: 100 mg/mL
form 
Powder/Solid
pka
1.0, 2.1, 8.02, 8.71(at 25℃)
color 
White
optical activity
[α]20/D 219±5°, c = 1% in 1 M HCl
Water Solubility 
0.112 g/L (25 ºC)
Merck 
14,2782
BRN 
1728094
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
LEVWYRKDKASIDU-IMJSIDKUSA-N
CAS DataBase Reference
56-89-3(CAS DataBase Reference)
NIST Chemistry Reference
L-Cystine(56-89-3)
EPA Substance Registry System
L-Cystine (56-89-3)
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Safety

Hazard Codes 
Xi,Xn
Risk Statements 
36/37/38-22
Safety Statements 
26-36-24/25
RIDADR 
2811
WGK Germany 
3
RTECS 
HA2690000
Hazard Note 
Irritant
TSCA 
Yes
PackingGroup 
III
HS Code 
29309014
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
30200
Product name
L-Cystine
Purity
≥99.7% (TLC)
Packaging
25g
Price
$34.8
Updated
2021/03/22
Sigma-Aldrich
Product number
1.02836
Product name
L-Cystine
Purity
suitable for biopharmaceutical production FCC
Packaging
1 kg
Price
$280
Updated
2021/03/22
Sigma-Aldrich
Product number
SAB1305544
Product name
MONOCLONAL ANTI-NEPHRIN antibody produced in mouse
Purity
clone 174CT2.1.1, crude ascites, buffered aqueous solution
Packaging
100 μL
Price
$377
Updated
2021/03/22
Sigma-Aldrich
Product number
SAB1306092
Product name
ANTI-NEPHRIN (Y1210) antibody produced in rabbit
Purity
affinity isolated antibody, buffered aqueous solution
Packaging
40TST
Price
$385
Updated
2021/03/22
Sigma-Aldrich
Product number
SAB1305596
Product name
ANTI-PHOSPHO-NEPHRIN(Y1193)) antibody produced in rabbit
Purity
affinity isolated antibody, buffered aqueous solution
Packaging
400UL
Price
$389
Updated
2021/03/22
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L-Cystine Chemical Properties,Usage,Production

Description

L-cystine (formula: (SCH2CH(NH2) CO2H)2), the L-form of cystine) is a covalently linked dimeric nonessential amino acid formed through the oxidation of cysteine. It is contained in many foods including eggs, meat, dairy products, and whole grains as well as in skin and hairs. L-cystine and L-methionine are the amino-acids required for wound healing and formation of epithelial tissue. It is able to stimulate the hematopoietic system and promote the formation of white and red blood cells. It can also be used as a component of parental and enteral nutrition. It can also be used for the treatment of dermatitis and protection of liver function. L-cystine is manufactured through the enzymatic conversion from DL-amino thiazoline carboxylic acid.

References

http://www.ajiaminoscience.com/products/manufactured_products/l-amino_acids/L-Cystine.aspx
https://pubchem.ncbi.nlm.nih.gov/compound/L-cystine#section=Pharmacology
https://en.wikipedia.org/wiki/Cystine

Chemical Properties

A white or almost white, crystalline powder, practically insoluble in water and in alcohol.

Uses

L-Cystine is a non-essential amino acid for human development. L-Cystine is formed by the dimerization of two cysteines through the sulfur.

Safety Profile

Low toxicity by ingestion. When heated to decomposition it emits toxic fumes of PO, and SOx

Purification Methods

Cystine disulfoxide impurity is removed by treating an aqueous suspension with H2S. The cystine is filtered off, washed with distilled water and dried at 100o under a vacuum over P2O5. Crystallise it by dissolving in 1.5M HCl, then adjusting to neutral pH with ammonia. Likely impurities are D-cystine, meso-cystine and tyrosine. Also purify it by dissolving it in 10% NH3 and adding gradually dilute AcOH until the point of precipitation and cooling slowly [Dughton & Harrison Acta Cryst 12 396, 402 1959.] Alternatively dissolve it in 6N NH4OH and evaporate it at room temperature for crystallisation to occur. [Chaney & Steinrauf Acta Cryst 30 711 1974, Beilstein 4 IV 3155.]

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L-Cystine Suppliers

Hebei boyu biology science and technology co., ltd
Tel
Email
bomyeabio@163.com
Country
China
ProdList
20
Advantage
58
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
Wuxi Bikang Bioengineering Co., Ltd
Tel
0510-80245888-
Fax
0510-80245999
Email
1258079079@qq.com
Country
China
ProdList
44
Advantage
58
Beijing Jin Ming Biotechnology Co., Ltd.
Tel
010-60605840-
Fax
010-60605840
Email
psaitong@jm-bio.com
Country
China
ProdList
12313
Advantage
58
Shanghai Boyle Chemical Co., Ltd.
Tel
Mr Qiu:021-50182298(Demestic market) Miss Xu:021-50180596(Abroad market)
Fax
+86-21-57758967
Email
sales@boylechem.com
Country
China
ProdList
2213
Advantage
55
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
future industrial shanghai co., ltd
Tel
400-0066-400;021-60496031
Fax
021-55660885
Email
sales@jonln.com;sales@jonln.com
Country
China
ProdList
1999
Advantage
65
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386 / 800-988-0390
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24555
Advantage
81
Beijing dtftchem Technology Co., Ltd.
Tel
13651141086; 86(10)60275028、60275820
Fax
86 (10) 60270825
Email
dtftchem@sina.com
Country
China
ProdList
3392
Advantage
62
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View Lastest Price from L-Cystine manufacturers

Hebei Crovell Biotech Co Ltd
Product
L-Cystine 56-89-3
Price
US $40.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
5000kg
Release date
2021-06-21
Hebei Yirun Sega Biological Technology Co. Ltd
Product
L-cystine 56-89-3
Price
US $45.00/KG
Min. Order
200KG
Purity
99.9%
Supply Ability
100tons
Release date
2021-11-10
Baoji Guokang Healthchem co.,ltd
Product
L-Cystine 56-89-3
Price
US $26.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
10000kg
Release date
2021-06-03

56-89-3, L-CystineRelated Search:


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  • 1-cystine
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  • Oxidized L-cysteine
  • oxidizedl-cysteine
  • Propanoic acid, 3,3'-dithiobis(2-amino-, (R-(R*,R*))-
  • (R)-(-)-CYSTINE
  • (R,R)-(-)-CYSTINE
  • (R,R)-3,3'-DITHIOBIS(2-AMINOPROPIONIC ACID)
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