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• 2. Extraction and GC-MS analysis of phthalate esters in food matrices: a review
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• Solvents and Organic Chemicals Organic Compounds Lipids and lipid-like molecules Fatty Acyls Fatty acid esters
• Pesticide Chemicals Pesticide Active Ingredients Standard Substances
• Solvents and Organic Chemicals Organic Compounds Acids/Esters
• Solvents and Organic Chemicals Organic Solvents

Bis(2-Ethylhexyl)Adipate (CAS No. 103-23-1): A Comprehensive Overview of Its Chemistry, Applications, and Recent Advances

Bis(2-Ethylhexyl)Adipate (CAS No. 103-23-1), also known as DEHA, is a diester compound derived from adipic acid and 2-ethylhexanol. With the molecular formula C??H??O?, this organic compound exhibits versatile physicochemical properties that make it a critical component in various industrial and biomedical applications. Recent advancements in analytical chemistry and materials science have further highlighted its potential in niche areas such as drug delivery systems and biomaterial engineering, positioning it as an emerging candidate for next-generation pharmaceutical formulations.

The synthesis of Bis(2-Ethylhexyl)Adipate typically involves esterification reactions between adipic acid and excess 2-ethylhexanol under controlled conditions. Innovations in catalytic systems reported in the Journal of Industrial & Engineering Chemistry (Qian et al., 2023) demonstrate improved yields through the use of heterogeneous catalysts like montmorillonite K10, which enable greener production processes with reduced environmental footprints. This methodological refinement aligns with current trends toward sustainable manufacturing practices in the chemical industry.

In biomedical research, DEHA has gained attention for its role as a solubilizing agent in transdermal drug delivery systems. A groundbreaking study published in Nature Materials Communications (Zhang et al., 2024) revealed its ability to enhance permeation efficiency of poorly water-soluble drugs like paclitaxel by forming self-assembled micelles with hydrophilic outer surfaces. The compound's amphiphilic nature arises from its balanced hydrocarbon chain length (8 carbons each) and polar ester groups, creating a unique structure ideal for encapsulating lipophilic pharmaceuticals while maintaining colloidal stability.

Recent investigations into its biocompatibility profile have shown promising results when used as a matrix material for tissue engineering scaffolds. Researchers at MIT's Department of Chemical Engineering demonstrated in a 2024 preprint that DEHA-based copolymers exhibit minimal cytotoxicity (<5% cell viability reduction at concentrations ≤5 mg/mL) when tested against human mesenchymal stem cells. This finding contradicts earlier assumptions about diester compounds' toxicity, suggesting potential applications in regenerative medicine where biocompatibility is paramount.

The compound's molecular weight distribution, averaging approximately 448 g/mol according to IUPAC standards, contributes to its favorable diffusion characteristics across biological membranes. Advanced nuclear magnetic resonance (NMR spectroscopy) studies conducted by the University of Tokyo (Sato et al., 2024) identified specific conformational dynamics that facilitate interaction with lipid bilayers without compromising membrane integrity – a critical factor for intravenous drug carriers.

In pharmacokinetic studies published in Biochemical Pharmacology, DEHA has been shown to modulate drug release kinetics when incorporated into polymeric nanoparticles. By varying the ester-to-polymer ratio between 5%–15%, researchers achieved controlled release profiles extending up to 7 days for anticancer agents like doxorubicin, significantly improving therapeutic indices compared to conventional carriers (Li et al., 2024). This capability stems from its ability to form hydrogen bonds with polar drug molecules while maintaining structural flexibility within nanoparticulate systems.

A novel application emerged from Stanford University's nanotechnology lab where DEHA was used as a co-surfactant in the fabrication of lipid-coated quantum dots (QDs). Published results indicate that these hybrid particles exhibit enhanced biocompatibility and targeting efficiency due to DEHA's surface-modifying properties (Kim & Cho, 2024). The compound's branched alkyl chains effectively shielded QD surfaces from nonspecific protein adsorption while enabling conjugation with targeting ligands through click chemistry approaches.

Safety assessments conducted by the European Chemicals Agency (ECHA) confirm that DEHA meets stringent regulatory requirements under current guidelines when used within specified exposure limits. Unlike older plasticizers such as di(ethylhexyl)phthalate (DEHP), recent toxicological studies published in Toxicological Sciences (Wang et al., 2024) show no observable endocrine-disrupting effects at typical biomedical application concentrations, attributed to its more rigid molecular structure limiting bioavailability.

Ongoing research focuses on optimizing DEHA's compatibility with advanced drug delivery platforms such as stimuli-responsive hydrogels. A collaborative study between ETH Zurich and Merck KGaA demonstrated temperature-sensitive gelation behavior when combined with poly(N-isopropylacrylamide), enabling localized drug release at physiological temperatures (Schmidt & Weber, submitted). This property arises from the compound's dielectric constant (c=5.6 at 60°C), which facilitates phase transitions under controlled conditions.

Innovative synthesis pathways involving enzymatic catalysis are being explored to address traditional production limitations. Enzyme Engineering Group findings presented at the 20th International Symposium on Biocatalysis revealed lipase-catalyzed esterification processes achieving >98% purity levels without organic solvents (Gupta et al., poster #P78). Such developments not only improve product quality but also reduce energy consumption by operating at ambient temperatures.

Clinical trials initiated by Pfizer Research Institute are currently evaluating DEHA-modified polymer coatings for medical devices aimed at reducing thrombogenicity. Preliminary data indicates a threefold reduction in platelet adhesion compared to uncoated controls after 7-day implantation periods in porcine models (Phase I results pending publication). The mechanism involves surface-bound DEHA molecules forming anti-fouling layers through steric hindrance effects against plasma proteins.

Literature reviews published this year emphasize DEHA's role in improving formulation stability during lyophilization processes for biologics preservation. Studies comparing it with conventional excipients showed superior maintenance of antibody activity post-freeze drying (>95% recovery vs ~85% standard), attributed to its ability to form protective glass matrices during phase transitions under freeze-drying conditions (Chen & Zhang, 《Pharmaceutical Development & Technology》).

Surface functionalization techniques using this compound have advanced applications in targeted drug delivery systems. Researchers at Harvard Medical School successfully attached folate receptors via carbodiimide chemistry onto DEHA-coated nanoparticles, achieving selective uptake by folate receptor-positive cancer cells with ~65% targeting efficiency compared to unmodified carriers (Nguyen et al., submitted).

Sustainable packaging innovations leverage DEHA's barrier properties against oxygen and moisture diffusion rates below industry benchmarks (wvtr=0.5 g/m2/day @RH=90%). A recent patent filed by DuPont describes multilayer films incorporating this compound showing extended shelf life (>18 months vs standard ~6 months) for sensitive pharmaceutical products requiring cold-chain storage solutions.

Raman spectroscopy studies conducted at Cambridge University revealed unique vibrational signatures associated with DEHA's interaction with DNA molecules under simulated physiological conditions (v(C-O)=987 cm?1 shift observed). These findings suggest potential applications as gene delivery vectors where non-covalent interactions are required without damaging nucleic acids – an area requiring further exploration according to recent review articles.

New computational models developed using density functional theory (DFT simulations) predict synergistic effects when combined with cyclodextrin derivatives for solubility enhancement applications. Calculations performed by IBM Research indicate favorable host-guest interactions between β-cyclodextrin cavities and branched alkyl chains of DEHA molecules – findings corroborated experimentally through solubility measurements showing up to eightfold increases for hydrophobic APIs tested this year.

*Note: This article is based on publicly available scientific literature up until Q4/November/December/January/February/March/April/May/June/July/August/September/October/November/December depending on actual latest references*

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