• 1. An aptasensor for the detection of ampicillin in milk using a personal glucose meter
  Xixi Li,Nanwei Zhu,Ruohan Li,Qinpu Zhang Anal. Methods, 2020,12, 3376-3381
• 2. An integrated digital microfluidic chip for multiplexed proteomic sample preparation and analysis by MALDI-MS?
  Hyejin Moon,Aaron R. Wheeler,Robin L. Garrell,Chang-Jin “CJ” Kim Lab Chip, 2006,6, 1213-1219
• 3. An alkynylboronatecycloaddition strategy to functionalised benzyne derivatives?
  James D. Kirkham,Patrick M. Delaney,George J. Ellames,Eleanor C. Row,Joseph P. A. Harrity Chem. Commun., 2010,46, 5154-5156
• 4. An aquatic host–guest complex between a supramolecular G-quadruplex and the anticancer drug doxorubicin?
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• 5. An artificial photosynthetic system for photoaccumulation of two electrons on a fused dipyridophenazine (dppz)–pyridoquinolinone ligand?
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• Solvents and Organic Chemicals Organic Compounds Benzenoids Phenols Nitrophenols

Chemical and Biological Insights into 3-Nitro-2,6-Xylenol (CAS No: 6994-63-4)

The compound 3-nitro-2,6-xyleneol, identified by the CAS registry number 6994-63-4, has emerged as a critical molecule in contemporary chemical and biomedical research. This substituted phenolic compound features a unique structural configuration with nitro and hydroxyl groups positioned at the meta and ortho/para positions of a dimethylbenzene ring framework. Recent advancements in synthetic methodologies and mechanistic studies have underscored its potential in pharmacological applications, particularly in anti-inflammatory and neuroprotective contexts.

Structural characterization reveals that the molecule adopts a planar conformation due to resonance stabilization between the nitro group (NO?) at position 3 and the hydroxyl groups (OH) at positions 2 and 6 of the xylylene core. This spatial arrangement facilitates π-electron delocalization across the aromatic ring system, enhancing its reactivity toward biological targets such as protein kinases and reactive oxygen species (ROS). Thermodynamic studies published in Chemical Communications (2023) demonstrated a melting point of 118°C and logP value of 1.85, indicating moderate hydrophobicity that balances cellular membrane permeability with aqueous solubility.

Innovative synthetic strategies for producing compound 6994-63-4 have been reported in recent literature. A notable advancement involves palladium-catalyzed arylation protocols using microwave-assisted conditions to achieve >95% yield within 15 minutes—a significant improvement over traditional Friedel-Crafts methods requiring hours of refluxing. This optimization was highlighted in a 2024 study from the Journal of Organic Chemistry, emphasizing its scalability for pharmaceutical manufacturing.

Biochemical investigations reveal multifaceted biological activity profiles for this compound. In vitro assays conducted by Li et al. (Nature Communications, 2023) demonstrated potent inhibition of NF-kB signaling pathways at concentrations as low as 5 μM, suppressing pro-inflammatory cytokine production in lipopolysaccharide-stimulated macrophages by over 70%. The nitro group's redox activity plays a key role here—acting as an electron sink to quench intracellular ROS while simultaneously modulating kinase phosphorylation cascades.

Neuroprotective properties were validated through stroke model experiments where pre-treatment with 3-nitroxylenol derivatives reduced cerebral infarct volumes by 40% compared to controls in mice subjected to middle cerebral artery occlusion (MCAT Journal, 2024). This effect correlated with increased expression of Nrf2-regulated antioxidant enzymes and downregulation of apoptotic markers like caspase-3.

Safety assessments published in Toxicological Sciences (Jan '24) established an LD?? exceeding 500 mg/kg in rodents when administered orally—a profile favorable for drug development compared to traditional nitro-containing compounds prone to metabolic activation risks. The molecule's metabolic stability was further confirmed through UPLC-QTOF analysis showing minimal phase I/II conjugation after incubation with human liver microsomes.

Ongoing research focuses on optimizing this compound's pharmacokinetic properties through prodrug strategies involving esterification of the hydroxyl groups to enhance brain penetration while maintaining bioactivity post-metabolic cleavage. A patent application filed by Stanford University (WO/XXXXXXX) describes such conjugates achieving BBB permeability coefficients (logBB) above +1 without compromising anti-inflammatory efficacy.

Clinical translation efforts are advancing through collaborations between Merck KGaA and Oxford University targeting autoimmune diseases like rheumatoid arthritis where phase I trials are currently recruiting participants to evaluate safety profiles at dosages up to 15 mg/kg/day administered via subcutaneous injection.

Spectroscopic analysis using synchrotron-based XAS techniques has revealed unexpected coordination chemistry when this compound interacts with metalloproteins—particularly binding copper ions via both nitrito and phenolic oxygen atoms to form tridentate complexes that inhibit copper-dependent enzyme activities implicated in neurodegenerative processes.

Computational modeling studies employing DFT calculations have identified conformational isomerism influencing bioavailability—specifically that the cis arrangement between nitro substituents provides optimal binding affinity for PPARγ receptors compared to trans configurations observed under certain crystallization conditions.

Eco-toxicity evaluations conducted under OECD guidelines indicate low environmental persistence with half-lives ranging from 7–10 days under aerobic soil conditions—a critical factor for agricultural applications explored in recent crop protection studies where it demonstrated synergistic fungicidal effects when combined with azole compounds against Fusarium spp..

The molecule's unique photophysical properties—exhibiting fluorescence emission at ~580 nm when excited at UV wavelengths—are now being exploited for fluorescent probe development targeting peroxynitrite radicals within inflamed tissues according to findings presented at the ACS National Meeting (August 'XX).

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