Thermo Scientific Chemicals L-Cysteine, 98+%

Product Code	Brand	Quantity
11488643	Thermo Scientific Chemicals A10435.18	50 g
11498643	Thermo Scientific Chemicals A10435.30	250 g
11478643	Thermo Scientific Chemicals A10435.0B	1000 g

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.

Chemical Identifiers

• CAS: 52-90-4
• Molecular Weight (g/mol): 121.154
• InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N
• PubChem CID: 5862
• IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid

• Molecular Formula: C3H7NO2S
• MDL Number: MFCD00064306
• 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
• ChEBI: CHEBI:17561
• SMILES: C(C(C(=O)O)N)S

Specifications

• Melting Point: ∽220°C (decomposition)
• Molecular Formula: C3H7NO2S
• Beilstein: 1721408
• 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
• InChI Key: XUJNEKJLAYXESH-REOHCLBHSA-N
• IUPAC Name: (2R)-2-amino-3-sulfanylpropanoic acid
• PubChem CID: 5862
• Formula Weight: 121.16
• Percent Purity: ≥98%

• CAS: 52-90-4
• MDL Number: MFCD00064306
• 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
• SMILES: C(C(C(=O)O)N)S
• Molecular Weight (g/mol): 121.154
• ChEBI: CHEBI:17561
• Sensitivity: Air Sensitive
• Chemical Name or Material: L-Cysteine

Safety and Handling

GHS H Statement
H302
Harmful if swallowed.

GHS P Statement
P264-P270-P301+P312-P330-P501a
Wash thoroughly after handling.
Do not eat, drink or smoke when using this product.
IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
Rinse mouth.

Warning

missing translation for 'einecsNumber' : 200-158-2

missing translation for 'rtecsNumber' : HA1600000

missing translation for 'tsca' : Yes

Recommended Storage : Ambient temperatures; Store under Nitrogen

RUO – Research Use Only