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Merck

1009005

USP

Acetylcysteine

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

N-Acetyl-L-cysteine, LNAC, NAC

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About This Item

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

Key Documents

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Product Name

Acetylcysteine, United States Pharmacopeia (USP) Reference Standard

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

SMILES string

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

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

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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.  ​

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.

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.

Other Notes

Sales restrictions may apply.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319

Hazard Classifications

Eye Irrit. 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Storage Class

11 - Combustible Solids

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

1009005-200MG:

jan

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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)
Acetylcysteine Compounded Solution
United States Pharmacopeia and National Formulary
United States Pharmacopeia, 41(2), 83-83 (2020)
Michael Berk et al.
Trends in pharmacological sciences, 34(3), 167-177 (2013-02-02)
N-Acetylcysteine (NAC) targets a diverse array of factors germane to the pathophysiology of multiple neuropsychiatric disorders including glutamatergic transmission, the antioxidant glutathione, neurotrophins, apoptosis, mitochondrial function, and inflammatory pathways. This review summarises the areas where the mechanisms of action of
Eduesley Santana-Santos et al.
The Annals of thoracic surgery, 97(5), 1617-1623 (2014-03-25)
The renoprotective effect of N-acetylcystein in patients undergoing coronary artery bypass graft surgery is controversial. We assessed the renoprotective effect of the highest dose of N-acetylcystein sanctioned for clinical use in a prospective, double-blind, placebo-controlled study including 70 chronic kidney
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