ChemicalBook > CAS DataBase List > L-Cysteine monohydrochloride

L-Cysteine monohydrochloride

Product Name
L-Cysteine monohydrochloride
CAS No.
52-89-1
Chemical Name
L-Cysteine monohydrochloride
Synonyms
L-CYSTEINE HCL;L-CYSTEINE HYDROCHLORIDE;CYSTEINE HYDROCHLORIDE;CYSTEINE HCL;L-cysteine HCL MONO;L-CYSTEINE MONOHYDROCHLORIDE;L-Cys·HCl;Cysteine chlorhydrate;wr348;EK 2367
CBNumber
CB6694980
Molecular Formula
C3H8ClNO2S
Formula Weight
157.62
MOL File
52-89-1.mol
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L-Cysteine monohydrochloride Property

Melting point:
180°C
alpha 
5.5 º (c=8, 6 N HCL)
storage temp. 
Inert atmosphere,Room Temperature
solubility 
H2O: 1 M at 20 °C, clear, colorless
form 
Solid
color 
White to light brown
Odor
odorless
optical activity
[α]20/D +6.4±0.3°, c = 5% in 5 M HCl
Water Solubility 
SOLUBLE
Sensitive 
Hygroscopic
Merck 
14,2781
BRN 
3560277
Stability:
Stable, but light, moisture and air sensitive. Incompatible with strong oxidizing agents, some metals.
InChIKey
IFQSXNOEEPCSLW-DKWTVANSSA-N
LogP
0.235 (est)
CAS DataBase Reference
52-89-1(CAS DataBase Reference)
NIST Chemistry Reference
L-cysteine hydrochloride(52-89-1)
EPA Substance Registry System
L-Cysteine hydrochloride (52-89-1)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
2
RTECS 
HA2275000
F 
3-10-23
TSCA 
Yes
HS Code 
29309013
Toxicity
LD50 intraperitoneal in mouse: 1250mg/kg
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
30120
Product name
L-Cysteine hydrochloride
Purity
anhydrous, ≥99.0% (RT)
Packaging
10g
Price
$44.7
Updated
2024/03/01
Sigma-Aldrich
Product number
30120
Product name
L-Cysteine hydrochloride
Purity
anhydrous, ≥99.0% (RT)
Packaging
50g
Price
$149
Updated
2024/03/01
Alfa Aesar
Product number
L06328
Product name
L-Cysteine hydrochloride, anhydrous, 98%
Packaging
25g
Price
$54.6
Updated
2023/06/20
Alfa Aesar
Product number
L06328
Product name
L-Cysteine hydrochloride, anhydrous, 98%
Packaging
100g
Price
$172
Updated
2023/06/20
Sigma-Aldrich
Product number
C7477
Product name
L-Cysteine hydrochloride
Purity
≥98.0%
Packaging
25g
Price
$122
Updated
2024/03/01
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L-Cysteine monohydrochloride Chemical Properties,Usage,Production

Chemical Properties

solid

Uses

As dough conditioner.

Uses

L-Cysteine hydrochloride, anhydrous is widely used as additive in food production. It is used as an antioxidant to promote fermentation and keep the flavor. It is also used in cosmetics and animal feed.

Definition

ChEBI: A hydrochloride obtained by combining L-cysteine with one molar equivalent of hydrogen chloride.

General Description

L-cysteine is a sulfur-containing amino acid.

Biochem/physiol Actions

NMDA glutamatergic receptor agonist that is also an agonist at AMPA glutamatergic receptors at high concentrations.

Safety Profile

: Moderately toxic by intraperitoneal, intravenous, and possibly other routes. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Cl-.

Purification Methods

Likely impurities are cystine and tyrosine. Crystallise the salt from MeOH by adding diethyl ether, or from hot 20% HCl. Dry it under vacuum over P2O5. Hygroscopic. [Beilstein 4 III 1580, 1600.]

L-Cysteine monohydrochloride Preparation Products And Raw materials

Raw materials

Stannous chloride dihydrate Ethanol thiazoline L-Cystine L-Cysteine

Preparation Products

N-Boc-S-Trityl-L-cysteine S-Carboxymethyl-L-Cysteine
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View Lastest Price from L-Cysteine monohydrochloride manufacturers

Hebei Longbang Technology Co., Ltd
Product
L-Cysteine hydrochloride anhydrous 52-89-1
Price
US $6.00/kg
Min. Order
1kg
Purity
More than 99%
Supply Ability
2000KG/Month
Release date
2024-05-13
HebeiShuoshengImportandExportco.,Ltd
Product
L-Cysteine hydrochloride anhydrous 52-89-1
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-09
WUHAN FORTUNA CHEMICAL CO., LTD
Product
L-Cysteine hydrochloride anhydrous 52-89-1
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
98%-102%; AJI
Supply Ability
10 TONS
Release date
2021-06-23

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