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Hubei Yongshunxin Pharma Co.,Ltd.
Hubei Yongshunxin Pharma Co.,Ltd.
7 YRS
Hubei, China
Main Products:
L-Cysteine / 2-Hydroxyquinoxaline / Maleic Hydrazide / L-Arginine / L-Tryptophan / N-Acetyl-L-Cysteine-d3
Hubei, China
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L-Cysteine / CAS 52-90-4
OVERVIEW
Uses
Packaging
25 KG/Fibre Drum
Lead Time
14-30 days
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DESCRIPTION
L-Cysteine
CAS:52-90-4
Molecular formula：C3H7NO2S
Molecular weight：121.158
Appearance:White solid
Synopsis:L-Cysteine is a kind of nonessential amino acid, which exists in keratin. Keratin is the main protein of nails, toenails, skin and hair. The relationship between L-cysteine and cystine is very close. Two molecules of L-cysteine form one molecule of cystine. L-Cysteine is more unstable. It is easy to become cystine which can also be reduced to L-cysteine. Both of them are sulfur-containing amino acids, which have effects on skin formation and detoxification. L-Cysteine is mainly used in cosmetics, medicine and food. In cosmetics, it is used to prepare perm, sunscreen, hair perfume and hair essence. In the field of medicine, it is used to prepare methyl cysteine, ethyl cysteine, acetylcysteine, methyl cysteine, ethyl cysteine and comprehensive amino acid preparations. L-Cysteine can also be used as a protective drug against radiation injury. In food, L-cysteine is used as bread fermentation auxiliary (ripening agent), antioxidant stabilizer for milk powder and fruit juice, and nutrient for pet animal food.
Structural formula:
Typical Properties
Summary
L-Cysteine is a kind of nonessential amino acid, which exists in keratin. Keratin is the main protein of nails, toenails, skin and hair. The relationship between L-cysteine and cystine is very close. Two molecules of L-cysteine form one molecule of cystine. L-Cysteine is more unstable. It is easy to become cystine which can also be reduced to L-cysteine. Both of them are sulfur-containing amino acids, which have effects on skin formation and detoxification. L-Cysteine is mainly used in cosmetics, medicine and food. In cosmetics, it is used to prepare perm, sunscreen, hair perfume and hair essence. In the field of medicine, it is used to prepare methyl cysteine, ethyl cysteine, acetylcysteine, methyl cysteine, ethyl cysteine and comprehensive amino acid preparations. L-Cysteine can also be used as a protective drug against radiation injury. In food, L-cysteine is used as bread fermentation auxiliary (ripening agent), antioxidant stabilizer for milk powder and fruit juice, and nutrient for pet animal food.
CAS No.
52-90-4
Formula
C3H7NO2S
Molecular Mass
121.158
Exact Mass
121.02
PSA
102.12000
Logp
0.02840
IUPAC
(2R)-2-amino-3-sulfanylpropanoic acid
SMILES
C([CH](C(=O)O)N)S
Attribute classification
Matter Classification
organic
Category
Cosmetics > Cosmetic Raw Materials
API & Intermediate > Other Chemical Drugs
Organic Chemical Materials > Amino Acids, Proteins and Nucleic Acids
Food(Feed) Additives > Antioxidants
API & Intermediate > Other Chemical Drugs
Organic Chemical Materials > Amino Acids, Proteins and Nucleic Acids
Food(Feed) Additives > Antioxidants
Chemical and Physical Properties
Melting Point
220 °C (dec.)(lit.)
Density
1.334 g/cm3
Boiling Point
293.9ºC at 760 mmHg
Flash Point
131.5ºC
Appearance
White solid
Acidity and Basicity
acidness alkalinity
Export information
HS Code
29309010
Export Rebate
13%
Export Formalities
A
M,P
Risk Code
R22; R36/37/38
Safety Label
Xn
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