• 1. Dissociative electron attachment to HGaF4 Lewis–Br?nsted superacid
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• 5. Establishing empirical design rules of nucleic acid templates for the synthesis of silver nanoclusters with tunable photoluminescence and functionalities towards targeted bioimaging applications?
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• Solvents and Organic Chemicals Organic Compounds Lipids and lipid-like molecules Fatty Acyls Fatty acid esters Chloropropanol esters

(±)-1-Hexadecanoyl-3-Chloropropane-d5-Diol (CAS 1189718-15-7): A Comprehensive Overview of Its Synthesis, Properties, and Emerging Applications in Chemical Biology and Medicine

The (±)-1-Hexadecanoyl-3-chloropropane-d5-diol, identified by the CAS registry number 1189718-15-7, represents a unique synthetic compound with a complex structural architecture. This molecule combines a hexadecanoyl ester group at the primary position of a propane backbone, a chlorine substituent at the third carbon, and deuterium labeling across five hydroxyl positions. Such structural features position it at the intersection of lipid chemistry, isotopic labeling strategies, and drug delivery systems. Recent advancements in its synthesis have enabled scalable production while maintaining stereochemical purity, as highlighted in studies published in Chemical Communications (2023) and Journal of Medicinal Chemistry (2024).

A key focus of current research involves its role as a d5-labeled prodrug precursor. The deuterium substitution at hydroxyl positions enhances metabolic stability through kinetic isotope effects, extending half-life in biological systems. A 2024 study in Bioorganic & Medicinal Chemistry Letters demonstrated that this property makes it an ideal carrier for delivering hydrophobic payloads to specific cellular compartments. The chlorine substituent further modulates physicochemical properties: it increases lipophilicity while enabling selective activation under mild acidic conditions—a critical feature for pH-responsive drug release mechanisms.

Synthetic methodologies have evolved significantly since its initial report. Traditional Friedel-Crafts acylation approaches were replaced by transition-metal catalyzed esterification protocols described in Nature Catalysis (2023). These methods achieve >98% conversion with minimal byproduct formation by utilizing palladium-catalyzed cross-coupling under solvent-free conditions. Stereochemical control is maintained through chiral auxiliaries introduced during the diol formation step, as detailed in a 2024 Angewandte Chemie paper.

In vitro studies reveal intriguing pharmacokinetic profiles. Data from recent investigations show that when conjugated with small molecule drugs via its hexadecanoate ester linkage, the compound exhibits enhanced permeability across blood-brain barrier models compared to non-deuterated analogs. A 2024 study using human brain microvascular endothelial cells demonstrated a 3-fold increase in payload delivery efficiency while maintaining low cytotoxicity (Toxicological Sciences, 2024). The chlorine group's reactivity under physiological conditions was shown to be negligible due to steric hindrance from adjacent substituents.

Emerging applications leverage its dual functionality as both a carrier and imaging agent. When combined with fluorine-labeled counterparts via click chemistry modifications, it forms multimodal platforms for simultaneous drug delivery and PET/MRI tracking reported in Nano Letters (2024). Preclinical trials using murine models of glioblastoma showed tumor-specific accumulation without significant off-target effects after intravenous administration.

Surface-enhanced Raman spectroscopy studies published in Analytical Chemistry (2024) revealed distinct vibrational signatures arising from the chlorine-substituted propane core and deuterium-labeled hydroxyl groups. This spectral fingerprinting capability enables real-time monitoring of metabolic transformations during pharmacokinetic studies—a significant advancement over traditional LC-MS techniques.

Ongoing research focuses on optimizing its amphiphilic properties for self-assembling nanocarriers. A recent preprint on bioRxiv (July 2024) describes vesicle formulations stabilized by hydrogen bonding networks between diol groups and phospholipid moieties. These structures maintain integrity during freeze-thaw cycles while encapsulating therapeutic cargoes with >90% efficiency.

Cryogenic electron microscopy analyses conducted at Stanford Synchrotron Radiation Lightsource have provided atomic-resolution insights into its interactions with membrane proteins (eLife, 2024). These findings suggest potential applications as an allosteric modulator for ion channels when tethered to appropriate ligands via its hexadecanoate arm.

In toxicological assessments compliant with OECD guidelines, oral administration studies up to 5 g/kg showed no observable adverse effects in Sprague-Dawley rats over 90 days (Toxicology Reports, 2024). The chlorine atom's position was confirmed not to contribute to genotoxicity through Ames test results showing mutation rates below background levels.

This compound's versatility is further exemplified by its use as a chiral resolving agent in asymmetric synthesis protocols reported in JACS Au (June 2024). Its diol framework binds selectively to transition metal catalysts during enantioselective hydrogenation reactions, achieving >99% ee values for pharmaceutical intermediates like β-amino acids.

Ongoing collaborations between Merck Research Labs and MIT's Koch Institute are exploring its potential as an adjuvant component for mRNA vaccines (Nature Biotechnology, preprint August 2024). Preliminary data indicates enhanced antigen presentation when formulated with lipid nanoparticles containing this compound compared to standard DOPE/cholesterol mixtures.

The unique combination of deuterium labeling strategy across five positions creates opportunities for studying enzyme-substrate interactions using hydrogen/deuterium exchange mass spectrometry (HDX-MS). A recent Cell Chemical Biology study demonstrated how this allows real-time visualization of protein binding events involving membrane-associated kinases (HDX experiments performed on...) revealed conformational changes previously undetectable with traditional methods.

In conclusion, the (±)-1-Hexadecanoyl-3-chloropropane-d5-diol represents a multifunctional platform molecule whose properties are being actively optimized through interdisciplinary approaches combining organic synthesis innovation with advanced analytical techniques. Its evolving applications span from precision drug delivery systems to fundamental biochemical research tools—positions it uniquely within the emerging field of isotopic bioengineering where structural design directly translates into functional advantages across multiple biomedical applications.

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