Acetylcysteine is also known as N-acetylcysteine or N-acetyl-L-cysteine or NAC. It is the N-acetyl derivative of cysteine. NAC is essentially a prodrug that is converted to cysteine (in the intestine by the enzyme aminoacylase 1) and absorbed in the intestine into the blood stream. Cysteine is a key constituent to glutathione and hence administration of acetylcysteine replenishes glutathione stores. Acetylcysteine can also be used as a general antioxidant which can help mitigate symptoms for a variety of diseases exacerbated by reactive oxygen species (ROS).
CAT No: 10-101-106
CAS No:616-91-1
Synonyms/Alias:N-Acetyl-L-cysteine; NAC; L-α-Acetamido-β-mercaptopropionic acid; NSC-111180
Chemical Name:(2R)-2-acetamido-3-sulfanylpropanoic acid
Acetylcysteine Ph. Eur., also known as N-acetyl-L-cysteine or NAC, is a widely utilized carbohydrate compound characterized by its acetylated cysteine structure. Possessing excellent solubility and stability, Acetylcysteine Ph. Eur. is valued for its versatility in a range of scientific and industrial settings. Its robust chemical properties allow it to function as a precursor to glutathione, an important antioxidant, and to participate in various biochemical pathways. The compound's unique thiol group enables it to interact with reactive oxygen species and disulfide bonds, making it a powerful agent in oxidative stress research and bioprocessing applications. Its relevance extends across multiple fields, including pharmaceutical manufacturing, laboratory research, and specialized industrial processes.
Pharmaceutical Formulation Development: Acetylcysteine Ph. Eur. is frequently employed in the development of pharmaceutical formulations due to its mucolytic and antioxidant properties. In this context, it serves as a key ingredient in the design of products intended to modulate mucus viscosity or to provide protection against oxidative degradation in drug formulations. Its compatibility with various excipients and stability under diverse conditions make it an ideal candidate for both oral and inhalable dosage forms. Researchers leverage its ability to disrupt disulfide bonds in mucoproteins, thereby enhancing the uniformity and efficacy of pharmaceutical preparations.
Biochemical and Molecular Biology Research: In biochemical laboratories, N-acetyl-L-cysteine is widely used as a reducing agent and a source of cysteine in cell culture media. Its role in maintaining redox balance is critical for experiments investigating oxidative stress, apoptosis, and cellular defense mechanisms. By replenishing intracellular glutathione levels, NAC enables scientists to model and assess cellular responses to oxidative damage, facilitating the study of antioxidant pathways and redox-sensitive signaling cascades. Its application extends to proteomics, where it helps in maintaining protein integrity during extraction and analysis.
Industrial and Environmental Applications: Within industrial settings, Acetylcysteine Ph. Eur. serves as an effective agent for controlling viscosity and preventing the aggregation of proteins or other macromolecules in manufacturing processes. Its reducing capability is harnessed in the stabilization of products sensitive to oxidation, supporting the longevity and quality of various formulations. Additionally, its use in environmental laboratories includes the detoxification of certain pollutants and the study of redox processes in environmental samples, highlighting its adaptability in both quality control and environmental monitoring.
Nutritional Supplement Research: As a precursor to cysteine, NAC is extensively studied in nutritional science for its potential to support endogenous antioxidant systems. Research applications include the investigation of its effects on cellular glutathione synthesis, metabolic health, and overall oxidative balance in model organisms. Its inclusion in dietary supplement prototypes allows researchers to evaluate its impact on biochemical markers of health, providing insights into its mechanisms of action and potential benefits in supporting physiological resilience under stress.
Cosmetic and Personal Care Product Development: The unique properties of Acetylcysteine Ph. Eur. also find relevance in cosmetic science, where it is explored as an ingredient in formulations aimed at protecting skin and hair from oxidative damage. Its ability to modulate disulfide bonds and neutralize free radicals is leveraged to enhance the stability and efficacy of personal care products. Developers utilize its antioxidant potential to create advanced cosmetic solutions that address the challenges posed by environmental stressors, contributing to the innovation of protective and restorative formulations.
In summary, Acetylcysteine Ph. Eur. demonstrates remarkable versatility across pharmaceutical, biochemical, industrial, nutritional, and cosmetic domains. Its multifaceted chemical profile, encompassing reducing, mucolytic, and antioxidant capabilities, underpins its widespread adoption in scientific research and product development. Whether facilitating the design of advanced drug formulations, supporting molecular biology investigations, optimizing industrial processes, advancing nutritional studies, or inspiring novel cosmetic products, NAC continues to be an indispensable tool for researchers and developers seeking to harness the benefits of this dynamic carbohydrate compound.
There is an expanding field of research investigating the benefits of alternatives to current pharmacological therapies in psychiatry. N-acetylcysteine (NAC) is emerging as a useful agent in the treatment of psychiatric disorders. Like many therapies, the clinical origins of NAC are far removed from its current use in psychiatry. Whereas the mechanisms of NAC are only beginning to be understood, it is likely that NAC is exerting benefits beyond being a precursor to the antioxidant, glutathione, modulating glutamatergic, neurotropic and inflammatory pathways. This review outlines the current literature regarding the use of NAC in disorders including addiction, compulsive and grooming disorders, schizophrenia and bipolar disorder. N-acetylcysteine has shown promising results in populations with these disorders, including those in whom treatment efficacy has previously been limited. The therapeutic potential of this acetylated amino acid is beginning to emerge in the field of psychiatric research.
Dean O, Giorlando F, Berk M. N-acetylcysteine in psychiatry: current therapeutic evidence and potential mechanisms of action[J]. Journal of psychiatry & neuroscience: JPN, 2011, 36(2): 78.
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