Thermo Scientific Chemicals L-Cysteine, 98+%

Description

L-Cysteine 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. Also used for the cleavage of disulfide bonds in the hair's keratin. 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. Its derivative, N-acetyl-L-cysteine is used as a dietary supplement. It acts as an antidote to acetaminophen overdose and prevents liver failure. It protects nerves from oxidation and thereby prevents illnesses like Alzheimer's and Parkinson's. 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 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. Also used for the cleavage of disulfide bonds in the hair′s keratin. 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. Its derivative, N-acetyl-L-cysteine is used as a dietary supplement. It acts as an antidote to acetaminophen overdose and prevents liver failure. It protects nerves from oxidation and thereby prevents illnesses like Alzheimer′s and Parkinson′s. Being an essential amino acid, it used as animal feed especially for sheep, which is responsible the growth of wool.

Solubility
Soluble in water, alcohol, acetic acid and aqueous ammonia. Insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide and carbon tetrachloride

Notes
Air sensitive. Incompatible with strong oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 52-90-4
• Molecular Formula: C3H7NO2S
• Molecular Weight (g/mol): 121.154
• MDL Number: MFCD00064306
• InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N
• Synonym: l-cysteine, cysteine, cystein, half-cystine, r-cysteine, thioserine, r-2-amino-3-mercaptopropanoic acid, l-+-cysteine, l-cystein, 2r-2-amino-3-sulfanylpropanoic acid
• PubChem CID: 5862
• ChEBI: CHEBI:17561
• IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid
• SMILES: C(C(C(=O)O)N)S

• Melting Point: ∼220°C (decomposition)
• Beilstein: 1721408
• Merck Index: 14,2781
• Solubility Information: Soluble in water,alcohol,acetic acid and aqueous ammonia. Insoluble in ether,acetone,ethyl acetate,benzene,carbon disulfide and carbon tetrachloride
• Quantity: 250 g
• Odor: Odorless
• Formula Weight: 121.16
• Optical Rotation: +7.9° (c=5 in 5N HCl)
• Sensitivity: Air Sensitive
• Percent Purity: ≥98%
• Chemical Name or Material: L-Cysteine

RUO – Research Use Only