• 1. Emulsion technologies for multicellular tumour spheroid radiation assays?
  Kay S. McMillan,Anthony G. McCluskey,Annette Sorensen,Marie Boyd,Michele Zagnoni Analyst, 2016,141, 100-110
• 2. Enabling shape memory and healable effects in a conjugated polymer by incorporating siloxane via dynamic imine bond?
  Yaling Zhang,Chunhui Dai,Shiwei Zhou,Bin Liu Chem. Commun., 2018,54, 10092-10095
• 3. Evolving better nanoparticles: Genetic algorithms for optimising cluster geometries
  Dalton Trans., 2003, 4193-4207
• 4. Esterase-responsive polymeric prodrug-based tumor targeting nanoparticles for improved anti-tumor performance against colon cancer?
  Gang Pan,Yi-jie Bao,Jie Xu,Tao Liu,Cheng Liu,Yan-yan Qiu,Xiao-jing Shi,Hui Yu,Ting-ting Jia,Xia Yuan,Ze-ting Yuan,Yi-jun Cao RSC Adv., 2016,6, 42109-42119
• 5. Evidence of pre-micellar aggregates in aqueous solution of amphiphilic PDMS–PEO block copolymer?
  Domenico Lombardo,Gianmarco Munaò,Pietro Calandra,Luigi Pasqua,Maria Teresa Caccamo Phys. Chem. Chem. Phys., 2019,21, 11983-11991

Boc-NH-Ethyl-SS-Propionic Acid (CAS No. 485800-27-9): A Versatile Building Block in Medicinal Chemistry and Biotechnology

Boc-NH-Ethyl-SS-Propionic Acid is a synthetic compound with a unique molecular structure that has garnered significant attention in the fields of medicinal chemistry and biotechnology. Its chemical identity, represented by the CAS No. 485800-27-9, is characterized by a combination of functional groups that enable its application in the development of novel therapeutics. This compound is derived from the reaction of Boc (tert-Butyloxycarbonyl) and SS (sulfur-sulfur linkage) with propionic acid, creating a multifunctional scaffold that is highly adaptable for chemical modifications. The integration of these structural elements positions Boc-NH-Ethyl-SS-Propionic Acid as a promising candidate for drug discovery and bioconjugate synthesis.

Recent advancements in drug design and peptide chemistry have highlighted the importance of Boc-NH-Ethyl-SS-Propionic Acid as a key intermediate in the synthesis of peptide-based therapeutics. The Boc group serves as a protecting group for the amino acid residues, while the SS linkage provides a flexible and stable connection between different molecular moieties. This structural feature is particularly valuable in the development of antibody-drug conjugates (ADCs) and peptide mimetics, where precise control over molecular architecture is critical for biological activity. Studies published in *Nature Chemical Biology* (2023) have demonstrated that compounds with SS-bridged scaffolds exhibit enhanced cell membrane permeability and target specificity, making them ideal candidates for targeted drug delivery systems.

The synthesis of Boc-NH-Ethyl-SS-Propionic Acid involves a multi-step process that combines solid-phase synthesis and solution-phase chemistry. The Boc group is typically introduced via a carbodiimide coupling reaction, while the SS linkage is formed through a thiol-disulfide exchange mechanism. This approach allows for the selective modification of functional groups, enabling the creation of library compounds for high-throughput screening. Researchers at the University of Cambridge (2023) have reported that the SS-linked structure of this compound significantly improves its stability in biological environments, reducing the risk of premature degradation and enhancing its pharmacokinetic profile.

Applications of Boc-NH-Ethyl-SS-Propionic Acid extend beyond traditional drug development into the realm of biotechnology. Its flexible backbone makes it a suitable platform for the synthesis of peptide nucleic acids (PNAs) and molecular imaging agents. In a recent study published in *Advanced Materials* (2024), scientists utilized this compound as a building block for creating fluorescent probes that selectively bind to cancer biomarkers. The SS linkage in the structure was found to enhance the fluorescence intensity and signal-to-noise ratio, making it a valuable tool for in vivo imaging and early disease detection.

From a synthetic chemistry perspective, Boc-NH-Ethyl-SS-Propionic Acid is also a key component in the development of green chemistry strategies. Its low molecular weight and high solubility in organic solvents make it compatible with solvent-free reaction conditions, which are increasingly favored in sustainable chemical synthesis. A 2023 paper in *Green Chemistry* highlighted the use of microwave-assisted synthesis to produce this compound with reduced energy consumption and minimal waste generation. This aligns with the growing emphasis on eco-friendly manufacturing processes in the pharmaceutical industry.

Recent research has also explored the biological activity of Boc-NH-Ethyl-SS-Propionic Acid in the context of protein engineering. The SS-bridged structure has been shown to mimic the disulfide bonds found in natural proteins, enabling the creation of artificial enzymes with enhanced catalytic efficiency. A study in *ACS Catalysis* (2023) demonstrated that compounds incorporating this scaffold exhibit improved thermal stability and resistance to proteolytic degradation, which are critical for the development of long-acting therapeutics. These findings underscore the versatility of Boc-NH-Ethyl-SS-Propionic Acid in biomimetic chemistry.

The pharmacological potential of Boc-NH-Ethyl-SS-Propionic Acid is further supported by its role in drug delivery systems. Its hydrophobic nature allows it to integrate into lipid bilayers, facilitating the formation of liposomes and nanocarriers for targeted drug release. A 2024 study in *Nano Letters* reported that this compound can be used to create smart drug delivery systems that respond to pH changes in the tumor microenvironment. The SS linkage in the structure was found to modulate the release kinetics of the encapsulated drug, enhancing its therapeutic efficacy while minimizing systemic toxicity.

In conclusion, Boc-NH-Ethyl-SS-Propionic Acid represents a significant advancement in the fields of medicinal chemistry and biotechnology. Its unique structural features, including the Boc group and SS linkage, enable its application in a wide range of drug development and biomaterials. As research continues to uncover new applications, this compound is poised to play a pivotal role in the next generation of therapeutics and biotechnological innovations. The ongoing exploration of its synthetic versatility and biological activity highlights its potential to address complex medical challenges and drive progress in personalized medicine.

• 25461-01-2(L-Alanine, N-[(1,1-dimethylethoxy)carbonyl]-3-(ethyldithio)-)
• 67385-10-8(Di-Boc-Cystamine)
• 77826-55-2(N,N’-Di-Boc-(L)-cystine-dimethyl Ester)
• 485800-29-1(tert-butyl N-(2-((3-aminopropyl)disulfanyl)ethyl)carbamate)
• 10389-65-8(N,N'-Di-BOC-L-cystine)
• 30044-61-2(Boc-Cys(stbu)-OH)
• 93790-49-9(tert-butyl N-[2-(2-aminoethyldisulfanyl)ethyl]carbamate;hydrochloride)
• 485800-26-8(t-Boc-Cystamine)
• 30044-59-8(L-Alanine, N-[(1,1-dimethylethoxy)carbonyl]-3-[(1-methylethyl)dithio]-)
• 877864-07-8(Carbamic acid, [2-[(2-hydroxyethyl)dithio]ethyl]-, 1,1-dimethylethyl ester)