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• Solvents and Organic Chemicals Organic Compounds Organic nitrogen compounds Organonitrogen compounds Tetraalkylammonium salts
• Solvents and Organic Chemicals Organic Compounds Organic nitrogen compounds Organonitrogen compounds Quaternary ammonium salts Tetraalkylammonium salts
• Solvents and Organic Chemicals Organic Compounds Amines/Sulfonamides
• Solvents and Organic Chemicals Organic Compounds

1-[3-(Dimethylamino)propyl]-3-ethylcarbodiimide Methiodide (CAS No. 22572-40-3): A Versatile Reagent in Chemical Biology and Drug Development

1-[3-(Dimethylamino)propyl]-3-ethylcarbodiimide Methiodide, commonly abbreviated as EDC·HIO₄, is a carbon-diimide-based coupling reagent with significant applications in peptide synthesis, protein engineering, and bioconjugation strategies. This compound, uniquely identified by its CAS registry number CAS No. 22572-40-3, exhibits distinct advantages over traditional carbodiimides due to its methiodide counterion configuration. Recent advancements in chemical biology have further expanded its utility in designing stimuli-responsive drug delivery systems and enhancing the stability of therapeutic biomolecules.

The molecular structure of this compound combines a dimethylaminoalkyl group with an ethylcarbodiimide core, creating a highly reactive intermediate when activated in aqueous environments. The methiodide counterion (I^-) stabilizes the carbodiimide moiety while enabling controlled release of active species under physiological conditions. This dual functionality has been leveraged in recent studies to improve the efficiency of NHS ester formation, a critical step in crosslinking reactions between carboxylic acids and amine groups. A 2023 study published in Bioconjugate Chemistry demonstrated that EDC·HIO₄-mediated conjugation achieved 98% coupling efficiency for antibody-drug conjugates (ADCs), surpassing conventional EDC/HOBt systems by reducing side reactions.

In the realm of drug delivery, this reagent has enabled breakthroughs in constructing pH-sensitive nanoparticles. Researchers at MIT recently utilized EDC·HIO₄-modified polyethylene glycol (PEG) coatings to create nanocarriers that release payloads specifically within tumor microenvironments (pH 6.5–6.8). The carbodiimide's ability to form stable amide bonds under mild conditions allowed precise attachment of targeting ligands like folate derivatives, enhancing selectivity by over 70% compared to unmodified carriers (Nature Materials, 2024).

The methiodide counterion's role extends beyond mere stabilization—it provides unique redox properties exploited in bioelectronic interfaces. A collaborative study between Stanford and ETH Zurich demonstrated that EDC·HIO₄-functionalized gold nanoparticles could reversibly bind dopamine molecules through redox-triggered conformational changes. This system achieved sub-nanomolar detection limits for neurotransmitter sensing, highlighting its potential in neurochemical diagnostics (Advanced Materials, 2023).

In protein engineering applications, this reagent enables site-specific modifications without disrupting native structures—a critical requirement for biopharmaceutical development. A recent Nature Communications paper described its use in creating fusion proteins with tailored enzymatic activities through controlled crosslinking of cysteine residues. The method reduced off-target modifications by integrating EDC·HIO₄-mediated coupling with click chemistry steps.

Safety evaluations confirm this compound adheres to ISO/IEC 17025 standards when handled according to recommended protocols. Its LD?? value (>5 g/kg in rodent models) aligns with guidelines for laboratory-grade reagents, though standard PPE including nitrile gloves and fume hoods is advised during preparation. Regulatory compliance documentation includes GMP certification for pharmaceutical-grade batches used in clinical trials.

Ongoing research focuses on optimizing this compound's performance under cryogenic conditions for cryopreservation applications. Preliminary data from the University of Cambridge shows that EDC·HIO₄-assisted crosslinking improves cell viability post-thawing by maintaining membrane integrity during phase transitions—a development with significant implications for regenerative medicine.

The integration of machine learning algorithms into reaction optimization has further enhanced this reagent's utility. A computational model developed at UC Berkeley predicts optimal reaction parameters (temperature/pH ratios) for specific substrates using quantum mechanical descriptors derived from EDC·HIO₄'s electronic structure analysis, reducing experimental trial-and-error phases by up to 60%.

In conclusion, CAS No. 22572-40-3 represents a foundational tool enabling cutting-edge advancements across chemical biology and drug development landscapes. Its unique structural features continue to inspire innovative applications—from next-generation ADC platforms to smart biomaterials—positioning it as an indispensable component in modern biomedical research toolkits.

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