N-Acetyl-L-cysteine CAS 616-91-1

N-Acetyl-L-cysteine CAS 616-91-1

As the professional manufacture, we would like to provide you high quality N-Acetyl-L-cysteine CAS 616-91-1. N-Acetyl-L-cysteine CAS 616-91-1 It is used in biochemical research, as a phlegm dissolving drug and an antidote for acetaminophen poisoning in medicine.

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Product Description

High quality N-Acetyl-L-cysteine CAS 616-91-1 is offered by China manufacturer Believe Chemical. N-Acetyl-L-cysteine CAS 616-91-1 Biological reagent, bulk drug, sulfhydryl (-sh) contained in the molecule can break the disulfide chain (-s-s) connecting the mucin peptide chain in mucus sputum. Mucin turns into a peptide chain of small molecules of chemicalbook, reducing the viscosity of sputum; It can also break the DNA fibers in purulent sputum, so it can dissolve not only white sticky sputum but also purulent sputum.

N-Acetyl-L-cysteine 616-91-1 Chemical Specification 

Product Name




Molecular Weight









White crystal powder



Melting point

106-108 °C(lit.)




The result conform with standard

N-Acetyl-L-cysteine CAS 616-91-1 Properties


CAS: 607-91-0

Molecular formula: C5H9NO3S

Molecular weight:163.19


Boiling point:407.7±40.0 °C(Predicted)

Density:1.249 (estimate)

Storage conditions: 2-8°C

N-Acetyl-L-cysteine 616-91-1

Production method

Dissolve L-cysteine hydrochloride (without crystal water) in 0.8 times distilled water, and then heat it appropriately. Then filter it in a funnel with activated carbon. Add 3.6 times the volume of 95% medicinal ethanol to the filtrate, and then add industrial pyridine (0.8 times the volume of chemical book). 

First cool it in an ice water bath, and then put it into the refrigerator overnight. The next day, filter it, wash it with chloroform (industrial product), filter it, press it dry, quickly put it into a vacuum dryer, and dry it at room temperature for 5h to get L-cysteine. The yield was 86.5%.

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