产品名称

L-胱氨酸

CAS NO

56-89-3

中文别名

3，3’-二硫代二丙氨酸；L-3，3’-二硫代双(2-氨基丙酸)；L-膀胱氨基酸；胱氨酸；双-β-硫化丙氨酸；双半胱氨酸；双巯丙氨酸

英文名称

L-Cystine

英文别名

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-

分子式

C₆H₁₂N₂O₄S₂

分子量

240.29

EINECS

200-296-3

熔点

260-261ºC

沸点

468.2ºC at 760 mmHg

毒性

L-Cystine	CAS NO：56-89-3
Chemical Name	L-Cystine
Molecular Structure
Molecular Formula	C6H12N2O4S2
Molecular Weight	240.29
Characteristics	A colorless white crystalline substance of hexagon,crystalline powder,easily soluble in acid alkali,insoluble in waterganic solvents such as alcohol, ethyl ether.
Packing	25㎏/drum，25㎏/carton
Quality  Standard	AJI92/USP28/EP5/FCCIV

Specification

Specific rotation[a]D20°	-215°～-225°
State of solution	≥98.0%
Heavy metals(Pb)	≤10PPm
Residue on ignition	≤0.1%
Iron(Fe)	≤20PPm
Loss on drying	≤0.02%
Other amino acids	Conforms
Arsenic(As2O3)	≤1PPm
Chloride(CI)	≤0.02%
Ammonium(NH4)	≤0.02%
Sulfate(SO4)	≤0.02%
Assay	98.0～101.0%
PH	5～6.5