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Thermo Scientific Chemicals L-Cysteine, 98+%
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.
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
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
Optical Rotation
+7.9° (c=5 in 5N HCl)
Formula Weight
121.16
Sensitivity
Air Sensitive
Percent Purity
≥98%
Hazard Category
Warning
Hazard Statement
GHS H Statement
H302
Harmful if swallowed.
Precautionary Statement
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.
Dispose of contents/container in accordance with local/regional/national/international regulations.
EINECSNumber
200-158-2
RTECSNumber
HA1600000
TSCA
Yes
Recommended Storage
Ambient temperatures; Store under Nitrogen
RUO – Research Use Only
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