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ChemicalBook >  Product Catalog >  Biochemical Engineering >  Amino Acids and Derivatives >  Cysteine derivatives >  L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate

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L-Cysteine hydrochloride monohydrate Basic information

Product Name:
L-Cysteine hydrochloride monohydrate
Synonyms:
  • (R)-(+)-CYSTEINE HYDROCHLORIDE HYDRATE
  • H-L-CYS-OH HCL H2O
  • H-CYS-OH HCL H2O
  • CYSTEINI HYDROCHLORIDUM MONOHYDRICUM
  • CYSTEINE HYDROCHLORIDE MONOHYDRATE
  • CYSTEINE HCL H2O
  • 3-MERCAPTO-2-AMINOPROPIONIC ACID HYDROCHLORIDE
  • 3-MERCAPTO-2-AMINOPROPIONIC ACID HYDROCHLORIDE MONOHYDRATE
CAS:
7048-04-6
MF:
C3H10ClNO3S
MW:
175.63
EINECS:
615-117-8
Product Categories:
  • Amino acid
  • amino
  • Cysteine [Cys, C]
  • alpha-Amino Acids
  • Amino Acids
  • Antioxidant
  • Biochemistry
  • Nutritional Supplements
  • Cysteine/CystineIon Channels
  • Excitatory Amino Acids
  • Ionotropic Glutamate Receptor ModulatorsNeurotransmitters
  • Ligand-Gated Ion Channels
  • NMDA Agonists
  • BioUltra
  • L-Amino Acids
  • Amino AcidsPharmacopoeia (USP)
  • Pharmacopoeia A-ZPharmacopoeia (USP)
  • Pharmacopoeial Amino Acids
  • Amino Acids
  • Biochemicals and Reagents
  • Amino AcidsPeptide Synthesis
  • Amino Acid Derivatives
  • Cysteine/Cystine
  • Amino AcidsBiochemicals and Reagents
  • Core Bioreagents
  • Research Essentials
Mol File:
7048-04-6.mol
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L-Cysteine hydrochloride monohydrate Chemical Properties

Melting point:
175°C
alpha 
+6.0~+7.5゜ (20℃/D)(c=8,6mol/l HCl)(calculated on the dried basis)
Density 
1.54 g/cm3
vapor pressure 
<0.1 hPa (20 °C)
refractive index 
6 ° (C=8, 1mol/L HCl)
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
H2O: 1 M at 20 °C, clear, colorless
form 
Solid
color 
White
PH
0.8-1.2 (100g/l, H2O, 20℃)
PH Range
1 - 2
optical activity
[α]20/D +5.6±0.3°, c = 5% in 5 M HCl
Water Solubility 
Soluble in cold water.
λmax
λ: 260 nm Amax: 1.0
λ: 280 nm Amax: 0.3
Sensitive 
Hygroscopic
Merck 
14,2781
BRN 
5158059
Stability:
Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride.
CAS DataBase Reference
7048-04-6(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36
WGK Germany 
3
RTECS 
HA2285000
3-10-23
TSCA 
Yes
HS Code 
29309013

MSDS

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L-Cysteine hydrochloride monohydrate Usage And Synthesis

Application

L-cysteine ​​hydrochloride monohydrate has been used in protocols to isolate dorsal root ganglion neurons (DRG).  It was also used in research to test its effect as an inhibitor of enzymatic browning of apples.

General descriptio

L-cysteine ​​hydrochloride monohydrate (LCHCMH) is a water-soluble salt of the non-essential amino acid L-cysteine. It is widely used in the pharmaceutical industry. The thermodynamic characteristics of LCHCMH in aqueous solution have been reported. [1] It can be crystallized in an orthogonal system with the P212121 space group. Its nonlinear optical (NLO) characteristics have been studied in single crystals grown by unidirectional Sankaranarayanan-Ramasamy (SR) technology.

Chemical Properties

white crystalline powder

Uses

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.

Definition

ChEBI: A hydrate that is the monohydrate form of L-cysteine hydrochloride.

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 hydrochloride monohydrate Preparation Products And Raw materials

Preparation Products

Raw materials

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