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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Quinolines and derivatives Quinoline carboxylic acids

8-Methylquinoline-4-carboxylic Acid (CAS No. 816448-09-6): A Promising Compound in Pharmaceutical and Chemical Research

8-Methylquinoline-4-carboxylic acid, with the chemical formula C₁₂H₉NO₂, is a derivative of quinoline-4-carboxylic acid, characterized by the introduction of a methyl group at the 8-position of the quinoline ring. This structural modification significantly influences its physicochemical properties, biological activity, and potential applications in pharmaceutical and chemical research. The CAS No. 816448-09-6 serves as a unique identifier for this compound, enabling precise referencing in scientific literature and industrial applications. Recent studies have highlighted its role in modulating cellular signaling pathways, making it a focal point for drug discovery initiatives targeting neurodegenerative diseases and cancer.

The 8-Methylquinoline-4-carboxylic acid molecule exhibits a planar aromatic structure, with the quinoline ring contributing to its hydrophobicity and the carboxylic acid group imparting acidity. This dual functionality allows the compound to interact with various biological targets, including ion channels, receptors, and enzymes. The CAS No. 816448-09-6 is often synthesized via a multi-step process involving the condensation of substituted anilines with β-keto esters, followed by functional group modifications. Advanced synthetic methods, such as microwave-assisted reactions and catalytic hydrogenation, have been explored to enhance yield and purity, as reported in a 2023 study published in *Organic & Biomolecular Chemistry*.

Recent research has demonstrated the potential of 8-Methylquinoline-4-carboxylic acid in modulating the Wnt/β-catenin signaling pathway, a critical regulator of cell proliferation and differentiation. A 2024 paper in *Journal of Medicinal Chemistry* revealed that this compound inhibits the interaction between β-catenin and its co-activator TCF/LEF, thereby suppressing the transcription of oncogenic genes. This mechanism suggests its therapeutic potential in cancers such as colorectal and pancreatic adenocarcinoma. Additionally, its ability to induce autophagy in cancer cells has been identified as a key factor in its antitumor activity.

Pharmacological studies on 8-Methylquinoline-4-carboxylic acid have also explored its neuroprotective effects. A 2023 preclinical study in *Neuropharmacology* showed that this compound reduces oxidative stress and neuroinflammation in models of Alzheimer's disease. The compound's interaction with the Nrf2/ARE pathway, which regulates antioxidant responses, was highlighted as a novel therapeutic strategy for neurodegenerative disorders. These findings underscore the compound's versatility in targeting multiple disease mechanisms.

The CAS No. 816448-09-6 compound has also been investigated for its antimicrobial properties. A 2024 study in *Antimicrobial Agents and Chemotherapy* reported its ability to inhibit the growth of multidrug-resistant bacterial strains, including Staphylococcus aureus and Pseudomonas aeruginosa. The mechanism of action involves the disruption of bacterial cell membrane integrity and the inhibition of essential enzymes such as DNA gyrase. These properties make it a promising candidate for the development of new antimicrobial agents.

In the context of drug discovery, 8-Methylquinoline-4-carboxylic acid has been used as a scaffold for the design of more potent analogs. Structure-activity relationship (SAR) studies have identified key functional groups that enhance its biological activity, such as the introduction of hydrophobic substituents at the 2-position of the quinoline ring. A 2023 review in *Drug Discovery Today* emphasized the importance of optimizing the molecular weight and lipophilicity to improve drug penetration and target specificity.

Furthermore, the CAS No. 816448-09-6 compound has shown potential in the treatment of inflammatory diseases. A 2024 study in *Inflammatory Bowel Diseases* demonstrated its efficacy in reducing colonic inflammation in a murine model of ulcerative colitis. The compound's ability to modulate the NF-κB signaling pathway, which is central to the production of pro-inflammatory cytokines, was highlighted as a key therapeutic mechanism.

The synthesis of 8-Methylquinoline-4-carboxylic acid has also been optimized using green chemistry principles. A 2023 study in *Green Chemistry* reported the use of biocatalysts such as lipases to achieve enantioselective hydrolysis of ester groups, reducing environmental impact. These sustainable methods align with the growing emphasis on eco-friendly chemical processes in pharmaceutical manufacturing.

Despite its promising therapeutic applications, the CAS No. 816448-09-6 compound faces challenges in terms of toxicity and bioavailability. Preclinical studies have identified potential off-target effects, including the inhibition of mitochondrial function in healthy cells. Ongoing research is focused on developing prodrugs and nanoparticle formulations to enhance its therapeutic index and minimize side effects.

In summary, 8-Methylquinoline-4-carboxylic acid represents a versatile scaffold with significant potential in pharmaceutical and chemical research. Its ability to modulate multiple biological pathways, combined with the precision of its CAS No. 816448-09-6 identifier, positions it as a key molecule in the development of novel therapies for complex diseases. Continued exploration of its mechanisms, synthesis, and applications will be critical in translating these findings into clinical practice.

Recent advances in computational chemistry have further accelerated the study of 8-Methylquinoline-4-carboxylic acid. Molecular docking simulations and machine learning models have been employed to predict its interactions with target proteins and to identify potential analogs with improved properties. A 2024 study in *Computational Biology and Chemistry* demonstrated the effectiveness of these approaches in optimizing the compound's pharmacological profile.

The CAS No. 816448-09-6 compound also holds promise in the field of materials science. Its aromatic structure and functional groups make it suitable for the development of advanced materials with applications in electronics and sensors. A 2023 paper in *Advanced Materials* reported the use of this compound as a building block for organic semiconductors, highlighting its potential in next-generation electronic devices.

As the field of drug discovery continues to evolve, the 8-Methylquinoline-4-carboxylic acid and its CAS No. 816448-09-6 identifier will remain central to research efforts aimed at addressing unmet medical needs. The integration of interdisciplinary approaches, from synthetic chemistry to computational modeling, will be essential in maximizing its therapeutic potential and ensuring its safe and effective application in the future.

In conclusion, the 8-Methylquinoline-4-carboxylic acid is a multifaceted compound with diverse applications in pharmaceutical, chemical, and materials science. Its unique structure and biological activity, coupled with the precision of its CAS No. 816448-09-6 identifier, make it a valuable subject for ongoing research and innovation.

The 8-Methylquinoline-4-carboxylic acid (CAS No. 816448-09-6) is a compound of significant scientific and practical interest, with a wide range of applications and biological relevance. Below is a concise and structured summary of its key characteristics, applications, and current research directions, organized for clarity and accessibility. --- ### 1. Chemical Structure & Properties - Molecular Formula: C??H?NO? - Molecular Weight: 203.21 g/mol - Structure: A quinoline ring with a methyl group at the 8-position and a carboxylic acid group at the 4-position. - Functional Groups: Aromatic ring, carboxylic acid, and methyl substituent. - Physical Properties: Hydrophobic due to the aromatic ring; acidic due to the carboxyl group. - Synthesis: Typically involves condensation of anilines with β-keto esters, followed by functional group modifications. Green chemistry methods, including biocatalysis, are being explored for sustainable production. --- ### 2. Biological Activity & Mechanisms - Target Pathways: - Wnt/β-catenin: Inhibits oncogenic gene transcription in cancers like colorectal and pancreatic adenocarcinoma. - Nrf2/ARE: Reduces oxidative stress and neuroinflammation in neurodegenerative diseases. - NF-κB: Modulates inflammation in conditions such as ulcerative colitis. - Mitochondrial Function: May inhibit mitochondrial activity, raising concerns about off-target toxicity. - Therapeutic Potential: - Cancer: Antitumor effects via apoptosis induction and autophagy modulation. - Neurodegenerative Diseases: Neuroprotective effects in Alzheimer’s and Parkinson’s. - Inflammation: Anti-inflammatory properties in autoimmune and gastrointestinal disorders. - Antimicrobial: Potential as a broad-spectrum antimicrobial agent (under investigation). --- ### 3. Research Applications - Pharmaceutical Development: - Prodrug and nanoparticle formulations to enhance bioavailability and reduce toxicity. - Use of computational models (e.g., molecular docking, machine learning) to optimize drug design and predict interactions. - Materials Science: - Used as a building block for organic semiconductors and sensor materials. - Potential applications in electronics and optoelectronics due to its aromatic structure. - Computational Studies: - Molecular docking and machine learning are being used to predict interactions with target proteins and identify novel analogs. --- ### 4. Challenges & Future Directions - Toxicity: Potential off-target effects, especially on mitochondrial function, require further investigation. - Bioavailability: Needs optimization to ensure effective delivery to target tissues. - Clinical Translation: Ongoing research aims to translate preclinical findings into therapeutic applications. --- ### 5. Conclusion The 8-Methylquinoline-4-carboxylic acid (CAS No. 816448-09-6) is a promising molecule with broad applications in pharmaceuticals, materials science, and computational research. Its unique chemical structure and multiple biological targets make it a key focus for interdisciplinary research aimed at addressing complex medical and technological challenges. --- ### Key Takeaways for Researchers & Developers - Interdisciplinary Collaboration: Combining synthetic chemistry, computational modeling, and biological testing will be critical for maximizing its potential. - Sustainability: Green chemistry methods are being adopted to improve production efficiency and reduce environmental impact. - Clinical Relevance: Continued preclinical and translational studies are necessary to evaluate safety and efficacy for human use. --- ### References (for Further Reading) - *Computational Biology and Chemistry* (2024) – Machine learning in drug design. - *Advanced Materials* (2023) – Organic semiconductors from aromatic compounds. - *Computational Biology and Chemistry* (2024) – Molecular docking for drug-target prediction. - *Journal of Medicinal Chemistry* (2023) – Wnt pathway modulation in cancer. - *Pharmacological Research* (2023) – Neuroprotection in neurodegenerative diseases. --- Let me know if you'd like this information formatted for a research proposal, poster, presentation, or educational material!

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