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>> L-Cysteine
L-Cysteine
L-Cysteine
CAS No.
52-90-4
Chemical Name:
L-Cysteine
Synonyms:
CYS;CYSH;E 920;L-Cys;Cystein;NSC-8746;CYSTEINE;H-CYS-OH;FEMA 3263;Thioserine
CBNumber:
CB7388480
Molecular Formula:
C3H7NO2S
Formula Weight:
121.16
MOL File:
52-90-4.mol
L-Cysteine
Property
mp :
220 °C (dec.)(lit.)
alpha :
8.75 º (c=12, 2N HCl)
FEMA :
3263
refractive index :
8.8 ° (C=8, 1mol/L HCl)
storage temp. :
Store at RT.
solubility :
H
2
O: 25 mg/mL
Water Solubility :
280 g/L (25 ºC)
Sensitive :
Air Sensitive
Merck :
14,2781
BRN :
1721408
Stability::
Stability Stable, but may be air sensitive. Incompatible with oxidizing agents, bases.
CAS DataBase Reference:
52-90-4(CAS DataBase Reference)
NIST Chemistry Reference:
L-Cysteine(52-90-4)
EPA Substance Registry System:
L-Cysteine(52-90-4)
Safety
Hazard Codes :
Xn,Xi
Risk Statements :
22-36/37/38-20/21/22
Safety Statements :
36-37/39-26
WGK Germany :
3
RTECS :
HA1600000
F :
10-23
HS Code :
29309012
Hazardous Substances Data:
52-90-4(Hazardous Substances Data)
L-Cysteine
Chemical Properties,Usage,Production
Chemical Properties
White crystalline powder
Usage
L-Cysteine is a non-essential amino acid that can be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available. L-Cysteine is commonly use d as a precursor in the food and pharmaceutical industries. L-Cysteine is used as a processing aid for baking, as an additive in cigarettes, as well as in the preparation of meat flavours.
L-Cysteine
Preparation Products And Raw materials
Raw materials
HYDROGEN SULFIDE
Ammonium hydroxide
Α-PROTEIN
L-Cystine
Tin granular
Preparation Products
Chiral 2,2-Disubstituted thiaprolinol derivatives
N-Acetyl-cysteine
D-Biotin
S-Carboxymethyl-L-cysteine
6-BROMOMETHYL-PTERIDINE-2,4-DIAMINE HBR
Ranitidine hydrochloride
Papain
L-Cysteine hydrochloride anhydrous
Carbocistein
L-Cysteine hydrochloride monohydrate
L-Cysteine
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52-90-4(L-Cysteine)
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