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• Solvents and Organic Chemicals Organic Compounds Lipids and lipid-like molecules Fatty Acyls Fatty acid methyl esters
• Solvents and Organic Chemicals Organic Compounds Lipids and lipid-like molecules Fatty Acyls Fatty acid esters Fatty acid methyl esters

Research Briefing on Methyl 4-(Thiophen-2-yl)butanoate (CAS: 20828-66-4) in Chemical Biology and Pharmaceutical Applications

Methyl 4-(thiophen-2-yl)butanoate (CAS: 20828-66-4) is a thiophene-based ester compound that has garnered significant attention in chemical biology and pharmaceutical research due to its versatile applications in drug discovery and material science. Recent studies have explored its potential as a building block for bioactive molecules, particularly in the development of novel therapeutics targeting inflammation, cancer, and neurological disorders. This briefing synthesizes the latest findings on its synthesis, biological activity, and industrial relevance.

A 2023 study published in the Journal of Medicinal Chemistry demonstrated the compound's role as a key intermediate in synthesizing thiophene-derived kinase inhibitors. Researchers optimized a one-pot catalytic process using 20828-66-4 to achieve a 78% yield, highlighting its synthetic utility. The study further revealed that derivatives of methyl 4-(thiophen-2-yl)butanoate exhibited selective inhibition of JAK3 kinases (IC₅₀ = 0.42 μM), suggesting promise for autoimmune disease therapies.

In pharmaceutical formulations, methyl 4-(thiophen-2-yl)butanoate has been investigated as a permeation enhancer. A 2024 European Journal of Pharmaceutics and Biopharmaceutics report showed that 0.5% w/v concentrations increased transdermal delivery of acyclovir by 3.2-fold, attributed to its lipid bilayer disruption properties. However, cytotoxicity assessments indicated a narrow therapeutic window (CC₅₀ = 12.5 μM in HaCaT cells), necessitating further structural optimization.

Notably, the compound's metabolic stability was evaluated in a recent Drug Metabolism and Disposition study (2024). Human liver microsome assays revealed rapid ester hydrolysis (t_1/2 = 8.3 min), with the resulting 4-(thiophen-2-yl)butanoic acid showing prolonged anti-inflammatory effects in murine models (62% reduction in TNF-α at 10 mg/kg). This suggests potential prodrug applications requiring esterase-resistant analogs.

Industrial-scale production challenges were addressed in a 2023 Organic Process Research & Development paper, where continuous flow chemistry achieved 85% purity at 2.7 kg/day throughput. The process eliminated column chromatography through innovative crystallization control, reducing production costs by 40% compared to batch methods. Regulatory updates indicate the compound is currently under FDA pre-IND review for use in a novel Parkinson's disease therapeutic.

Emerging applications include its use as a ligand in Pd-catalyzed cross-couplings (ACS Catalysis, 2024), where the thiophene moiety demonstrated superior π-backbonding compared to phenyl analogs. Quantum chemical calculations (DFT at B3LYP/6-311++G) correlated this with enhanced catalytic turnover in Sonogashira reactions (TON up to 19,000). These findings expand its utility beyond pharmaceutical contexts into materials chemistry.

Ongoing clinical investigations (Phase I/II trial NCT05432891) are evaluating a 20828-66-4-derived HDAC inhibitor for T-cell lymphoma, with preliminary data showing 47% ORR at 6 months. Safety profiles indicate manageable QT prolongation (Grade 2 in 18% of patients), warranting dose refinement. Patent analysis reveals 14 new filings in 2023-2024 covering crystalline forms and co-crystals with improved bioavailability.

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