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L-Cysteine hydrochloride hydrate, 98.5-101.0%

Product Code. 10226983 Shop All Thermo Scientific Chemicals Products
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500 g
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Product Code. 10226983

Brand: Thermo Scientific Acros 111785000

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L-cysteine hydrochloride hydrate, CA S# 7048-04-6, also known as L-cysteine hydrochloride monohydrate, is a soluble salt of the non-essential amino acid, L-cysteine. It is commonly used as a nucleophile in several chemical reactions. | CAS: 345909-32-2 | C3H8ClNO2S | 157.61 g/mol

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

General Information

• L-cysteine hydrochloride hydrate is a non-essential proteinogenic amino acid commonly used in chemical reactions, for instance, the thiol side chain in cysteine often participates in enzymatic reactions as a nucleophile.

Application

• L-cysteine hydrochloride hydrate plays an important role as a histidine ammonia-lyase inhibitor with the ability to interfere with the action of histidine ammonia-lyase.
• In chemical reactions, L-cysteine hydrochloride hydrate is used as a raw material for the production of S-carboxymethyl-L-cysteine, L-cysteine base, and N-acetyl-L-cysteine.
• This compound also has antioxidant activity.
• It has been used in laboratory protocols to separate dorsal root ganglion neurons.
• This compound is applied to study the inhibitory effect of L-cysteine hydrochloride hydrate in preventing enzymatic browning in apples.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 345909-32-2
Molecular Formula C3H8ClNO2S
Molecular Weight (g/mol) 157.61
MDL Number MFCD00065606
InChI Key IFQSXNOEEPCSLW-QYLAHFPANA-N
Synonym l-cysteine hydrochloride monohydrate, h-cys-oh.hcl.h2o, l-cysteine hydrochloride hydrate, l-cysteine monohydrate monochloride, r-2-amino-3-mercaptopropanoic acid hydrochloride hydrate, unii-zt934n0x4w, l-cysteine hydrate hydrochloride, cysteine hydrochloride monohydrate, l, h-cys-ohhclh2o, cysteine hcl
PubChem CID 23462
SMILES Cl.N[C@@H](CS)C(O)=O

Specifications

Melting Point 175°C
Ammonium 100ppm max.
Color White or Colorless
Heavy Metals (as Pb) 10ppm max.
Infrared Spectrum Authentic
Iron (Fe) 20ppm max.
Assay Percent Range 98.5-101.0%
Loss on Drying 8.0% to 12.0% (24 hrs, 5mm Hg)
Packaging Plastic Bottle
Linear Formula HCl·xH2O
Beilstein 04, 506
Specific Rotation +5.5° to +7.0° (20°C, 589nm) (c=8, 6N HCl)
Sulfate 300ppm max.
Merck Index 14, 2781
Sulfated Ash 0.1% max.
IUPAC Name (2R)-2-amino-3-sulfanylpropanoic acid;hydrate;hydrochloride
Specific Rotation Condition + 5.50 (20.00°C c=8,6 N HCL)
Quantity 500 g
Formula Weight 157.61
Percent Purity 98.5 to 101.0% (on dried substance)
Physical Form Crystalline Powder or Crystals
Chemical Name or Material L-Cysteine hydrochloride hydrate
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Product Identifier
  • L-Cysteine hydrochloride hydrate
Signal Word
  • Warning
Hazard Category
  • Serious eye damage/eye irritation Category 2
  • Skin corrosion/irritation Category 2
  • Specific target organ toxicity Category 3
Hazard Statement
  • H319-Causes serious eye irritation.
  • H335-May cause respiratory irritation.
  • H315-Causes skin irritation.
Precautionary Statement
  • P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
  • P280-Wear protective gloves/protective clothing/eye protection/face protection.
  • P302+P352-IF ON SKIN: Wash with plenty of water/.
  • P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

RUO – Research Use Only

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