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S-Carboxymethyl-L-Cysteine CAS: 638-23-3

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Product Name:    S-Carboxymethyl-L-Cysteine
Synonyms:    (l)-2-amino-3-(carboxymethylthio)propionicacid;(r)-s-(carboxymethyl)cysteine;carbocisteine;l.j.206;l-3-((carboxymethyl)thio)alanine;l-carboxymethylcysteine;3-[(CARBOXYMETHYL)THIO]ALANINE;3-CARBOXYMETHYLTHIO-L-ALANINE
CAS:    638-23-3
MF:    C5H9NO4S
MW:    179.19
EINECS:    211-327-5
Product Categories:    Pyrans;API intermediates;Food and Feed Additive;Small molecule;Mainly used in chronic bronchitis, bronchial asthma and other diseases caused by sticky sputum, cough phlegm difficulties and phlegm obstruction airway disease treatment;API;PROTECTED AMINO ACID & PEPTIDES;Amino Acids;Cysteine [Cys, C];Nutritional Supplements;Amines;Chiral Reagents;Intermediates & Fine Chemicals;Pharmaceuticals;Amino Acid Derivatives;Cysteine/Cystine;Peptide Synthesis;A - H;Amino Acids;Modified Amino Acids
Mol File:    638-23-3.mol


COA

Index

Standard

Test result

Appearance

A white,crystalline powder

Conforms

Appearance of solution

Clear and colorless

Conforms

PH

2.8~3.0

2.88

Specific optical rotation

-32.5°~-35.5°

-33.19°

Chlorides

≤0.15%

0.15%

Sulphates

≤300ppm

300ppm

Heavy metals

≤10ppm

10ppm

Loss on drying

≤0.5%

0.25%

Sulphated ash

≤0.3%

0.17%

Assay

98.5~101.0%

99.46%


Application

Used in biochemical research, as a phlegm solubilizer. Use phlegm dissolving medicine, occasionally mild dizziness, nausea, stomach upset, diarrhea, gastrointestinal bleeding, skin rash and other adverse reactions. Use with caution in patients with digestive tract.
This product is a mucolytic agent, an expectorant, and an anti-nasal infection drug.
It is mainly used for the treatment of diseases such as thick sputum, difficulty in expectoration and obstruction of sputum and trachea caused by diseases such as chronic bronchitis and bronchial asthma