L-Cysteine hydrochloride monohydrate, 99%
L-Cysteine hydrochloride monohydrate, 99%
Thermo Scientific Chemicals

L-Cysteine hydrochloride monohydrate, 99%

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500 g
25 g
100 g
Catalog number A10389.36
Price (USD)/ Each
251.65
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279.00 
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Quantity:
500 g
Request bulk or custom format
Price (USD)/ Each
251.65
Online exclusive
279.00 
Save 27.35 (10%)
Add to cart
L-Cysteine hydrochloride monohydrate, 99%
Catalog numberA10389.36
Price (USD)/ Each
251.65
Online exclusive
279.00 
Save 27.35 (10%)
-
Add to cart
Chemical Identifiers
CAS7048-04-6
IUPAC Namehydrogen (2R)-2-amino-3-sulfanylpropanoic acid hydrate chloride
Molecular FormulaC3H10ClNO3S
InChI KeyQIJRTFXNRTXDIP-JIZZDEOASA-N
SMILES[H+].O.[Cl-].N[C@@H](CS)C(O)=O
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SpecificationsSpecification SheetSpecification Sheet
Optical Rotation+5.7 to +6.8° (80 mg/mL in 6N HCl at 25°C, US Sourced material)
Assay from Supplier's CofA≥98.5 to ≤101.5% (US Sourced Material)
Appearance (Color)White
FormCrystals or powder or crystalline powder
Assay (Redox Titration)≥98.5 to ≤101.5% (UK Sourced Material)
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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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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.

Solubility
Soluble in cold water.

Notes
Air and light sensitive. Hygroscopic. Keep container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents, metals and hydrogen chloride.
RUO – Research Use Only

General References:

  1. Prasad, P. V.; Rao, T. V.; Rao, K. R.; Kamal, C. S.; Samuel, T. Studies on influence of Cd 2+ ions in unidirectional growth and characterization of l-Cysteine hydrochloride monohydrate single crystals. Spectrochim. Acta, Part A 2015, 136, 1950-1954.
  2. Koohyar, F.; Rostami, A. A.; Chaichi, M. J.; Kiani, F. Refractive indices, viscosities, and densities for l-cysteine hydrochloride monohydrate+ D-sorbitol+ water, and glycerol+ D-sorbitol+ water in the temperature range between T= 303.15 K and T= 323.15 K. 2011, 40 (7), 1361-1370.