Skip to Content
Merck
All Photos(1)

Documents

1009005

USP

Acetylcysteine

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

N-Acetyl-L-cysteine, LNAC, NAC

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
HSCH2CH(NHCOCH3)CO2H
CAS Number:
616-91-1
Molecular Weight:
163.19
Beilstein:
1724426
MDL number:
MFCD00004880
UNSPSC Code:
41116107
PubChem Substance ID:
329748885
NACRES:
NA.24

grade

pharmaceutical primary standard

API family

acetylcysteine

manufacturer/tradename

USP

mp

106-108 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

SMILES string

CC(=O)N[C@@H](CS)C(O)=O

InChI

1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)/t4-/m0/s1

InChI key

PWKSKIMOESPYIA-BYPYZUCNSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia. For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Acetylcysteine USP reference standard intended for use in specified compendial tests and assays.

Also used to prepare standard stock and standard solution for assay by using the liquid chromatography method in conjunction with uv detector according to the given below monographs of United States Pharmacopeia (USP):
  • Acetylcysteine Solution
  • Acetylcysteine
  • Acetylcysteine Compounded Solution

Biochem/physiol Actions

Antioxidant and mucolytic agent. Increases cellular pools of free radical scavengers. Reported to prevent apoptosis in neuronal cells but induce apoptosis in smooth muscle cells. Inhibits HIV replication. May serve as a substrate for microsomal glutathione transferase.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Acetylcysteine Compounded Solution
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 41(2), 83-83 (2020)
Acetylcysteine Solution
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 27(3), 82-82 (2020)
Acetylcysteine
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 31(3), 82-82 (2020)
Anna M Sadowska
Therapeutic advances in respiratory disease, 6(3), 127-135 (2012-03-01)
To develop an efficient therapy for chronic obstructive pulmonary disease (COPD), N-acetylcysteine (NAC) has been tested as a medication that can suppress various pathogenic processes in this disease. NAC is a thiol compound, which provides sulfhydryl groups. NAC can act
Yuval Samuni et al.
Biochimica et biophysica acta, 1830(8), 4117-4129 (2013-04-27)
N-acetylcysteine (NAC) has been in clinical practice for several decades. It has been used as a mucolytic agent and for the treatment of numerous disorders including paracetamol intoxication, doxorubicin cardiotoxicity, ischemia-reperfusion cardiac injury, acute respiratory distress syndrome, bronchitis, chemotherapy-induced toxicity
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service