• 1. Chemical synthesis of 4′-thio and 4′-sulfinyl pyrimidine nucleoside analogues
  Mieke Guinan,Ningwu Huang,Chris S. Hawes,Marcelo A. Lima,Mark Smith,Gavin J. Miller Org. Biomol. Chem. 2022 20 1401

• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Benzenesulfonyl compounds Benzenesulfonyl halides

Comprehensive Overview of 2,4,5-Trichloro-benzenesulfonyl chloride (CAS No. 15945-07-0): Properties, Applications, and Industry Insights

2,4,5-Trichloro-benzenesulfonyl chloride (CAS No. 15945-07-0) is a specialized organosulfur compound widely recognized for its role as a key intermediate in organic synthesis and pharmaceutical manufacturing. This compound, characterized by its sulfonyl chloride functional group, exhibits unique reactivity that makes it valuable for constructing complex molecular architectures. With the growing demand for high-performance chemicals in agrochemicals, dyes, and advanced materials, understanding its properties and applications has become increasingly relevant.

The molecular structure of 2,4,5-Trichloro-benzenesulfonyl chloride features a trichlorinated benzene ring, which enhances its electrophilic character and stability under various reaction conditions. Researchers frequently highlight its utility in nucleophilic substitution reactions, where it serves as a precursor for sulfonamides, sulfonate esters, and other sulfur-containing derivatives. Recent trends in green chemistry have also spurred interest in optimizing its synthesis to reduce environmental impact, aligning with global sustainability goals.

In the pharmaceutical sector, CAS 15945-07-0 is often employed in the development of active pharmaceutical ingredients (APIs). Its ability to introduce sulfonyl groups into molecules is critical for modulating bioactivity and improving drug solubility. A 2023 market analysis revealed that sulfonation reagents like this compound are experiencing rising demand due to their versatility in drug discovery pipelines, particularly for antiviral and anticancer agents.

Beyond pharmaceuticals, 2,4,5-Trichloro-benzenesulfonyl chloride finds applications in material science, where it contributes to the synthesis of polymeric materials with enhanced thermal stability. Innovations in high-temperature resins and flame-retardant additives have further expanded its industrial relevance. Notably, manufacturers are exploring its potential in electronic materials for printed circuit boards, responding to the booming IoT and 5G technology markets.

Safety and handling protocols for 15945-07-0 emphasize proper storage in anhydrous conditions to prevent hydrolysis. Industry best practices recommend using corrosion-resistant containers and inert atmosphere packaging, topics frequently searched by laboratory professionals. Regulatory compliance, including REACH and OSHA standards, remains a priority for suppliers, as evidenced by the compound’s detailed SDS documentation.

Emerging research explores the compound’s role in catalysis and asymmetric synthesis, addressing the pharmaceutical industry’s need for chiral building blocks. A 2024 study published in the Journal of Organic Chemistry demonstrated its efficacy in constructing biaryl sulfones, a scaffold prevalent in PD-1/PD-L1 inhibitors for immunotherapy—a hot topic in cancer research forums.

From an economic perspective, the global market for benzenesulfonyl chloride derivatives is projected to grow at a CAGR of 5.2% through 2030, driven by Asia-Pacific’s expanding fine chemical industries. Suppliers are increasingly focusing on supply chain resilience and batch-to-batch consistency, two frequently searched terms in procurement discussions. Custom synthesis services for CAS 15945-07-0 are also gaining traction among contract research organizations (CROs).

Environmental considerations have led to advancements in waste treatment methods for sulfonyl chloride byproducts. Techniques like neutralization with alkaline solutions and activated carbon adsorption are now standard in production facilities, reflecting the industry’s shift toward circular economy principles—a subject dominating sustainable chemistry webinars.

In analytical chemistry, 2,4,5-Trichloro-benzenesulfonyl chloride serves as a derivatization agent for HPLC and LC-MS analysis of amines and alcohols. Its strong UV absorbance and predictable fragmentation patterns make it ideal for trace-level detection, a capability highlighted in recent forensic science publications. This aligns with growing interest in analytical method validation across regulatory agencies.

Future directions include exploring its use in bioconjugation chemistry for antibody-drug conjugates (ADCs) and proteolysis-targeting chimeras (PROTACs)—two trending areas in biopharmaceutical innovation. As synthetic methodologies evolve, particularly in flow chemistry and photocatalysis, the compound’s role in high-throughput screening platforms is expected to expand significantly.

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