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L-CystineCAS: 56-89-3

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Quick Details
Synonyms: beta,beta-dithiodialanine;bis(beta-amino-beta-carboxyethyl) disulfide;3,3-Dithiobis-L-alanine;L-(-)-Cystine;beta,beta-diamino-beta,beta-dicarboxydiethyl disulfide;L-Alanine, 3,3-dithiobis-;Propanoic acid, 3,3-dithiobis(2-amino-, (R-(R*,R*))-;Cystine, L-;Bis(.beta.-amino-.beta.-carboxyethyl) disulfide;Propanoic acid, 3, 3-dithiobis[2-amino-, [R-(R*,R*)]-;CYSTINE, (L);beta,beta-Dithioalanine, L-;L-Cysteine disulfide;Gelucystine;(-)-Cystine;Alanine, 3, 3-dithiobis-;(2R)-2-amino-3-[(2R)-2-amino-2-carboxy-ethyl]disulfanyl-propanoic acid;(R-(R*,R*))-3,3-Dithiobis(2-aminopropanoic acid);Cystine, L- (8CI);Cystine (VAN);Cystine (L)-;L-Cystine (9CI);(R,R)-3,3-dithiobis(2-aminopropanoic acid);3,3-Dithiobis(2-aminopropanoic acid), (R-(R*,R*))-;L(-)-3,3'-Dithiobis(2-aminopropanoic acid);beta,beta-Diamino-beta,beta-dicarboxydiethyldisulfide;L-alpha-Diamino-beta-dithiolactic acid;alpha-Diamino-beta-dithiolactic acid;L-Dicysteine;(2R,2R)-3,3-disulfanediylbis(2-aminopropanoic acid);L(-)-3,3'-Dithiobis;L--Cystine;(H-Cys-OH)2; Classification: Food Additive Products
EINECS: 200-296-3 Molecular Formula: C6H12N2O4S2
Melting Point: 260-261℃ Boiling Point: 468.2 °C at 760 mmHg
Stability: Stable. Incompatible with strong oxidizing agents. Water Solubility: 0.112 g/L (25℃)
Refractive index: -222.5 ° (C=1, 1mol/L HCl) Flash Point: 237 °C
Purity: 98% Appearance: White crystalline powder
HazardClass: Brand Name: WHHZ
MF:C6H12N2O4S2: MW:240.3
Packaging & Delivery
Packaging Detail: in bottle or bucket
Delivery Detail: delivery in 2-3 days after receiving 30% T/T
Detailed Description

L-Cystine Basic information
Product Name: L-Cystine
Synonyms: (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-
CAS: 56-89-3
MF: C6H12N2O4S2
MW: 240.3
EINECS: 200-296-3
Product Categories: Food and Feed Additive ; Amino Acids ; Amino Acid Derivatives ; Cysteine [Cys, C] ; Nutritional Supplements ; L-Amino Acids ; Amino Acids
Mol File: 56-89-3.mol


L-Cystine Chemical Properties
mp  >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
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 Information
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-24/25
RIDADR  2811
WGK Germany  3
RTECS  HA2690000
Hazard Note  Irritant
PackingGroup  III
HS Code  29309014

L-Cystine Usage And Synthesis
Chemical Properties White crystalline powder

L-Cystine Preparation Products And Raw materials
Raw materials Sodium hydroxide --> Hydrochloric acid --> Activated carbon --> Activated carbon,decolor --> Α-PROTEIN --> Ethylenediaminetetraacetic acid --> L(+)-Arginine --> L-Histidine --> Boc-D-Tyrosine --> DL-Serine --> terylene --> N-CARBOBENZOXY-DL-LEUCINE --> SILK --> KERATIN
Preparation Products Cilastatin --> L-Cysteine --> L-Cysteine hydrochloride anhydrous --> L-Cysteine hydrochloride monohydrate --> DL-Cystine

L-Cystine Structure

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