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52-90-4 - L-Cysteine, 98+% - L-2-Amino-3-mercaptopropionic acid - H-Cys-OH - A10435 - Alfa Aesar

A10435 L-Cysteine, 98+%

CAS Number
52-90-4
Synonyms
L-2-Amino-3-mercaptopropionic acid
H-Cys-OH

Size Price ($) Quantity Availability
50g 25.60
250g 84.96
1000g 296.10
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L-Cysteine, 98+%

MDL
MFCD00064306
EINECS
200-158-2

Chemical Properties

Formula
C3H7NO2S
Formula Weight
121.16
Melting point
ca 220° dec.
Sensitivity
Air Sensitive
Solubility
Soluble in water, alcohol, acetic acid and aqueous ammonia. Insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide and carbon tetrachloride

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.

Notes

Air sensitive. Incompatible with strong oxidizing agents.

Literature References

Mu, L.; Gao, Y.; Hu, X. l-Cysteine: A biocompatible, breathable and beneficial coating for graphene oxide. Biomaterials 2015, 52, 301-311.

Yin, K.; Li, B.; Wang, X.; Zhang, W.; Chen, L. Ultrasensitive colorimetric detection of Cu 2+ ion based on catalytic oxidation of l-cysteine. Biosens. Bioelectron. 2015, 64, 81-87.

GHS Hazard and Precautionary Statements

Hazard Statements: H302

Harmful if swallowed.

Precautionary Statements: 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.

Other References

Merck
14,2781
Beilstein
1721408
Harmonized Tariff Code
2930.90
TSCA
Yes
RTECS
HA1600000

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