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HomeProduct name listL-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate

Synonym(s):L-Cysteine hydrochloride monohydrate;Cys, L-Cysteinium Chloride Monohydrate, L-Cysteine Hydrochloride, Monohydrate

  • CAS NO.:7048-04-6
  • Empirical Formula: C3H10ClNO3S
  • Molecular Weight: 175.63
  • MDL number: MFCD00065606
  • EINECS: 615-117-8
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-08-21 22:41:43
L-Cysteine hydrochloride monohydrate Structural

What is L-Cysteine hydrochloride monohydrate?

Chemical properties

white crystalline powder
	L-Cysteine hydrochloride monohydrate

The Uses of L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate is used as a precursor in food, pharmaceutical and personal care products. It is actively involved in the production of flavors such as meat flavor obtained by reacting with sugars. It plays an important role as a key raw material for the manufacture of N-acetyl-L-cysteine, S-carboxymethyl-L-cysteine and L-cysteine base. It is involved in the treatment of liver disease as an antioxidant and antidote. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.

The Uses of L-Cysteine hydrochloride monohydrate

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.

The Uses of L-Cysteine hydrochloride monohydrate

L-Cysteine hydrochloride monohydrate has been used as a component of yeast dropout media for culturing yeasts. It has also been used as a component of differential reinforced clostridial broth (DRCM) for the isolation of clostridia.

Definition

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

General Description

This product is supplied from Wacker FERMOPURE? material, but is sold for R&D use only, not for drug, household or other uses.

Biochem/physiol Actions

NMDA glutamatergic receptor antagonist.

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.]

Properties of L-Cysteine hydrochloride monohydrate

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.
Sensitive  Hygroscopic
λmax λ: 260 nm Amax: 1.0
λ: 280 nm Amax: 0.3
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)

Safety information for L-Cysteine hydrochloride monohydrate

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P337+P313:IF eye irritation persists: Get medical advice/attention.

Computed Descriptors for L-Cysteine hydrochloride monohydrate

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