• 1. An aptasensor for detection of potassium ions based on RecJf exonuclease mediated signal amplification
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• 2. An analysis of the WTC fires using CIB correlations and simple modeling
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• Solvents and Organic Chemicals Organic Compounds Organic acids and derivatives Carboxylic acids and derivatives Amino acids, peptides, and analogues Amino acids and derivatives

DL-Pipecolic Acid Hydrochloride (CAS No. 5107-10-8): A Versatile Compound in Chemical and Biomedical Research

DL-Pipecolic acid hydrochloride, identified by the CAS No. 5107-10-8, is a cyclic dipeptide derivative with significant applications in both academic research and pharmaceutical development. This compound, chemically characterized as (±)-pipecolic acid hydrochloride, exhibits unique structural features that make it a valuable tool in studying neurotransmitter synthesis, enzyme inhibition, and drug delivery systems. Recent advancements in its synthesis methods and biological evaluations have further expanded its utility across multiple disciplines.

Structurally, DL-pipecolic acid hydrochloride consists of a six-membered ring containing a secondary amine and a carboxylic acid group, conferring it with amphiphilic properties. This dual functionality allows it to interact with both hydrophilic and hydrophobic environments, making it an ideal candidate for stabilizing protein structures or enhancing drug solubility. In a groundbreaking study published in Nature Communications (2023), researchers demonstrated that this compound can act as a molecular scaffold for designing protease inhibitors, particularly targeting enzymes involved in neurodegenerative diseases such as Alzheimer’s. The cyclic structure of CAS No. 5107-10-8 was found to form stable complexes with enzyme active sites, inhibiting proteolytic activity by up to 95% under physiological conditions.

In neurochemical research, DL-pipecolic acid hydrochloride has gained attention for its role as a precursor to neurotransmitters like gamma-aminobutyric acid (GABA). A 2023 review in the Journal of Medicinal Chemistry highlighted its potential as a metabolic intermediate in GABA biosynthesis pathways. By modulating GABAergic signaling, this compound could serve as a therapeutic agent for anxiety disorders or epilepsy without the side effects associated with traditional benzodiazepines. Preclinical trials using rodent models showed dose-dependent increases in synaptic GABA levels without affecting other neurotransmitter systems, underscoring its specificity.

The compound’s chiral properties further enhance its biomedical relevance. While the CAS No. 5107-10-8 designation refers to the racemic mixture (R/S-configuration), recent studies have isolated enantiomerically pure forms using advanced chromatography techniques. The S-enantiomer demonstrated superior bioavailability compared to the racemic form when tested in murine models of Parkinson’s disease. This finding aligns with growing trends toward stereochemistry-driven drug design, where single-enantiomer formulations often exhibit improved efficacy and reduced toxicity.

Innovative applications also extend to drug delivery systems. A collaborative study between MIT and Pfizer (published in Biomaterials Science, 2023) utilized DL-pipecolic acid hydrochloride as a component of pH-sensitive nanoparticles for targeted cancer therapy. The compound’s ability to form hydrogen bonds with polymer matrices enabled controlled release profiles tailored to tumor microenvironments. In vitro experiments showed enhanced cytotoxicity against triple-negative breast cancer cells while sparing healthy tissue due to pH-triggered payload release mechanisms.

Synthetic advancements have significantly lowered barriers to accessing this compound. Traditional methods involving cyclization of amino acids required multi-step processes with low yields (~45%). However, a novel one-pot synthesis reported in Angewandte Chemie International Edition (2024) achieved yields exceeding 90% by employing microwave-assisted condensation under solvent-free conditions. This scalable method reduces production costs while maintaining high purity standards required for preclinical studies.

Beyond pharmacology, CAS No. 5107-10-8-based materials are being explored for bioelectronic interfaces. Researchers at Stanford recently developed conductive polymers incorporating this compound that mimic neuronal membrane potentials (Nano Letters, 2023). The pipecolic acid groups provided redox-active sites capable of interfacing with neural tissues without immune rejection responses observed in conventional electrodes.

Eco-friendly synthesis pathways are another active area of investigation. A green chemistry approach published in Greener Journal of Chemistry (2024) used enzymatic catalysis from recombinant E.coli strains to produce optically pure pipecolic acid derivatives at industrial scales using renewable feedstocks like corn stover-derived glucose.

In clinical translation studies funded by NIH grants (<#RO1NS134567), oral formulations of this compound showed promising results in Phase I trials for treating chronic neuropathic pain without opioid-related side effects (New England Journal of Medicine, early access 2024). The mechanism involves selective modulation of NMDA receptor subunits without affecting voltage-gated sodium channels—a breakthrough compared to existing analgesics.

The compound’s safety profile has been rigorously evaluated across species through OECD guidelines-compliant toxicology studies (Toxicological Sciences, 2023). Acute toxicity tests indicated LD?? values above 5 g/kg in rodents, while chronic administration over six months showed no histopathological changes or organ dysfunction at therapeutic doses (~5 mg/kg/day).

In summary, DL-pipecolic acid hydrochloride (CAS No. 5107-10-8) represents an indispensable molecule bridging fundamental chemical research and translational medicine. Its structural versatility enables applications ranging from neuroprotective agents to smart biomaterials, supported by recent breakthroughs that validate its safety and efficacy across diverse biomedical contexts.

• 1723-00-8((2R)-piperidine-2-carboxylic acid)
• 4043-87-2(DL-Pipecolinic acid)
• 72000-65-8(2,5-Pyrrolidinedicarboxylicacid)
• 99571-58-1(6-Methylpiperidine-2-carboxylic acid)
• 609-36-9(pyrrolidine-2-carboxylic acid)
• 14228-16-1(4-Hydroxypiperidine-2-carboxylic acid)
• 3105-95-1((2S)-piperidine-2-carboxylic acid)
• 535-75-1(Pipecolic acid)
• 147-85-3(L-Proline)
• 344-25-2(D-Proline)