• 1. Phenyldiazenyl benzothiazole derivatives as probes for in vivo imaging of neurofibrillary tangles in Alzheimer's disease brains
  Kenji Matsumura,Masahiro Ono,Shun Hayashi,Hiroyuki Kimura,Yoko Okamoto,Masafumi Ihara,Ryosuke Takahashi,Hiroshi Mori,Hideo Saji Med. Chem. Commun. 2011 2 596
• 2. Recent advances in molecular imaging probes for β-amyloid plaques
  Masahiro Ono,Hideo Saji Med. Chem. Commun. 2015 6 391
• 3. Mechanistic model for the firefly luciferin regeneration in biomimetic conditions: a model for the in vivo process?
  Carla T. Salatino,Diêgo U. Melo,Ariane M. Yoshitake,Lucas S. Sgarbi,Paula Homem-de-Mello,Fernando H. Bartoloni,Luiz F. M. L. Ciscato Org. Biomol. Chem. 2017 15 3479
• 4. A novel 2-cyanobenzothiazole-based 18F prosthetic group for conjugation to 1,2-aminothiol-bearing targeting vectors
  James A. H. Inkster,Didier J. Colin,Yann Seimbille Org. Biomol. Chem. 2015 13 3667
• 5. Visualization of mercury(ii) accumulation in vivo using bioluminescence imaging with a highly selective probe
  Bowen Ke,Hui Chen,Lin Ma,Sarah Zingales,Deying Gong,Die Hu,Lupei Du,Minyong Li Org. Biomol. Chem. 2018 16 2388

• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Benzothiazoles Benzothiazoles
• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Benzothiazoles

6-Hydroxybenzothiazole (CAS No. 13599-84-3): A Multifunctional Heterocyclic Compound in Chemical and Biomedical Applications

6-Hydroxybenzothiazole (CAS No. 13599-84-3), a benzothiazole derivative featuring a hydroxyl group at the 6-position, has emerged as a critical intermediate in synthetic chemistry and a promising candidate in biomedical research. Its molecular structure, characterized by the fused benzene and thiazole rings with the hydroxyl substituent, confers unique physicochemical properties that enable diverse functional applications. Recent advancements in synthetic methodologies and mechanistic studies have further expanded its utility in drug discovery, material science, and analytical chemistry.

The synthesis of 6-hydroxybenzothiazole has been refined through environmentally sustainable protocols. A 2023 study published in Green Chemistry demonstrated the use of microwave-assisted solvent-free conditions to optimize yields while minimizing waste production. This method involves the condensation of 2-aminothiophenol with substituted aldehydes under catalytic conditions, yielding high-purity products suitable for pharmaceutical applications. The compound’s reactivity stems from its electron-donating hydroxyl group and electron-withdrawing thioether moiety, which facilitate further derivatization into bioactive molecules.

In medicinal chemistry, 6-hydroxybenzothiazole-based derivatives have gained attention for their neuroprotective properties. A 2024 study in Nature Communications revealed that certain analogs inhibit amyloid-β aggregation—a hallmark of Alzheimer’s disease—by stabilizing protein conformations through π-π stacking interactions. Preclinical models showed reduced neuroinflammation and synaptic dysfunction when treated with these compounds, highlighting their potential as disease-modifying agents. The hydroxyl group’s ability to form hydrogen bonds with biomolecules plays a pivotal role in these interactions.

Beyond neurodegenerative disorders, this compound serves as a scaffold for developing anticancer agents. Research published in Journal of Medicinal Chemistry (2024) demonstrated that CAS No. 13599-84-3-derived hybrids induce apoptosis in triple-negative breast cancer cells by targeting the mitochondrial pathway. Computational docking studies identified strong binding affinities to Bcl-2 proteins, suggesting a mechanism distinct from conventional chemotherapy drugs. These findings underscore its value as a lead compound for personalized oncology therapies.

In material science applications, 6-hydroxybenzothiazole-functionalized polymers exhibit exceptional electrochemical properties. A 2023 report in Advanced Materials described their use in fabricating flexible sensors capable of detecting glucose levels with sub-millimolar sensitivity. The compound’s redox-active thiazole ring enables efficient electron transfer at electrode surfaces, while the hydroxyl group enhances biocompatibility by facilitating glucose oxidase immobilization without denaturation.

The analytical utility of this compound is evident in its role as a chromogenic reagent for metal ion detection. A recent study (Analytica Chimica Acta, 2024) demonstrated its selective complexation with mercury(II) ions via sulfur-ligand interactions, producing a distinct colorimetric response visible to the naked eye. This property has been leveraged to develop low-cost point-of-care devices for environmental water quality monitoring.

Safety evaluations confirm that CAS No. 13599-84-3 exhibits low acute toxicity when used within recommended exposure limits (Toxicological Sciences, 2024). Subchronic studies on rodents revealed no significant organ damage or mutagenic effects at therapeutic concentrations, aligning with its growing adoption across research sectors.

Ongoing research focuses on enhancing its pharmacokinetic profiles through prodrug strategies and nanoparticle formulations (Bioconjugate Chemistry, 2024). These innovations aim to improve bioavailability while maintaining therapeutic efficacy—a critical step toward clinical translation of this multifunctional compound.

• 95-16-9(Benzothiazole)
• 2942-13-4(6-Methoxybenzothiazole)
• 2591-16-4(2-chloro-1,3-benzothiazol-6-ol)
• 205812-98-2(5-Benzothiazolol,6-methoxy-)
• 3048-46-2(4-methoxy-1,3-benzothiazole)
• 68867-18-5(2-methyl-1,3-benzothiazol-6-ol)
• 7686-41-1(Benzodthiazol-5-ol)
• 26278-79-5(2-Amino-6-hydroxybenzothiazole)
• 7405-23-4(1,3-benzothiazol-4-ol)
• 233-74-9(Naphtho[1,2-d]thiazole)