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L-Cystine

Description References
L-Cystine
L-Cystine
CAS No.
56-89-3
Chemical Name:
L-Cystine
Synonyms
NPHN;NPHS1;Cystin;(CYS)2;Nephrin;h-(cys);l-cystin;1-cystine;L-CYSTINE;NSC 13203
CBNumber:
CB6394079
Molecular Formula:
C6H12N2O4S2
Formula Weight:
240.3
MOL File:
56-89-3.mol

L-Cystine Properties

Melting point:
>240 °C (dec.)(lit.)
alpha 
-224 º(c=2 in 1M HCl)
Density 
1.68
refractive index 
-222.5 ° (C=1, 1mol/L HCl)
storage temp. 
Store at RT.
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.
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)

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

L-Cystine price More Price(36)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 30200 L-Cystine ≥99.7% (TLC) 56-89-3 25g $31.9 2018-11-13 Buy
Sigma-Aldrich 1161586 Cystine United States Pharmacopeia (USP) Reference Standard 56-89-3 200mg $401 2018-11-13 Buy
TCI Chemical C0519 L-(-)-Cystine >98.0%(HPLC)(N) 56-89-3 25g $40 2018-11-22 Buy
TCI Chemical C0519 L-(-)-Cystine >98.0%(HPLC)(N) 56-89-3 500g $214 2018-11-22 Buy
Alfa Aesar A13762 L-Cystine, 99% 56-89-3 250g $96.9 2018-11-13 Buy

L-Cystine Chemical Properties,Uses,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.]

L-Cystine Preparation Products And Raw materials

Raw materials

Preparation Products


L-Cystine Suppliers

Global( 444)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 22049 58
Hebei Jiangkai Trading Co., Ltd
0086-17197824289/17197824028
alice@hbjkai.com CHINA 277 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32651 55
ATK CHEMICAL COMPANY LIMITED
+86 21 5161 9050/ 5187 7795
+86 21 5161 9052/ 5187 7796 ivan@atkchemical.com CHINA 14293 60
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1659 55
Hubei Jusheng Technology Co.,Ltd.
86-155-27864001
peter@hubeijusheng.com CHINA 18004 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 10967 58
Jinan Tenglong Chemical Co.,Ltd
Whatsapp:+8615563263311 Skype:live:smions7080
smions7080@gmail.com CHINA 778 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038
zheyansh@163.com CHINA 3624 58

View Lastest Price from L-Cystine manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-01-10 Bis(4-fluorophenyl)-methanone
56-89-3
US $10.00 / G 1G 99.9% skype:lila_1646 whatsapp:+8617197824208 500kg per week Hebei Jiangkai Trading Co., Ltd
2018-01-09 4CLMPD,4CL-MPD,4-CL-MPD ada@tuskwei.com sky;17197824028
56-89-3
US $4.00 / KG 1G more than 98.9% 6000g/day ada@tuskwei.com sky;17197824028 Hebei Jiangkai Trading Co., Ltd
2018-08-02 L-Cystine
56-89-3
US $20.00 / KG 10KG 99% 20kg career henan chemical co

L-Cystine Spectrum


56-89-3(L-Cystine)Related Search:


  • (r-(r*,r*))-3,3’-dithiobis(2-aminopropanoicacid)
  • 1-cystine
  • 3,3’-dithiobis(2-amino-,(r-(r*,r*))-propanoicaci
  • 3,3’-dithiobis(2-aminopropanoicacid)
  • 3,3’-dithiobis-l-alanin
  • 3,3'-Dithiobis(2-aminopropanoic acid)
  • 3,3'-Dithiodialanine
  • Alanine, 3,3'-dithiobis-
  • Alanine, 3,3'-dithiodi-
  • alpha-Diamino-beta-dithiolactic acid
  • beta,beta’-diamino-beta,beta’-dicarboxydiethyldisulfide
  • beta,beta’-dithiodialanine
  • beta,beta'-Diamino-beta,beta'-dicarboxydiethyl disulfide
  • beta,beta'-Dithiobisalanine
  • beta,beta'-Dithiodialanine
  • Bis(beta-amino-beta-carboxyethyl) disulfide
  • bis(beta-amino-beta-carboxyethyl)disulfide
  • Cysteine disulfide
  • cysteinedisulfide
  • Cystin
  • Cystine acid
  • cystineacid
  • Dicysteine
  • Gelucystine (L form)
  • L-3,3’-Dithiodialanine
  • l-cysteinedisulfide
  • l-cystin
  • L-Dicystiene
  • Nephrin
  • 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)
  • BETA,BETA'-DITHIOBIS-A-AMINOPROPIONIC ACID
  • CYSTINE, L-
  • (CYS)2
  • (H-CYS-OH)2
  • H-L-CYSTINE
  • L(-)-3,3'-DITHIOBIS(2-AMINOPROPANOIC ACID)
  • L-(-)-CYSTINE
  • L-CYSTINE
  • L-CYSTINE extrapure
  • gelucystine
  • L-3, 31-dithiobis (2-aminopropanoic acid)
  • L-Cystinic acid
  • L-β,β'-Dithiobis(2-amino-pro-panoic acid)
  • (2R)-2-Amino-3-[(2R)-2-amino-3-hydroxy-3-oxopropyl]disulfanylpropanoic acid
  • L-(-)-3,3'-Dithiobis (2-aminopropionic acid)
  • 3,3'-Dithiobis(L-alanine)
  • (2S,7S)-(-)-Cystine
  • L-CYSTINERESEARCH GRADE
  • L-Cystine, extra pure, FCC
  • L-α-DiaMino-β-dithiolacetic acid
  • L-β,β′-DiaMino-β,β′-dicarboxydiethyl disulfide
  • L-β,β′-Dithiodialanine
  • L-Dicysteine
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