Description

1-Benzenesulfonylimidazole is a versatile sulfonylation reagent and a key synthetic intermediate in organic chemistry. Its primary value lies in its ability to act as a mild and selective benzenesulfonyl donor, facilitating the introduction of the benzenesulfonyl protecting group in complex molecule synthesis. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals where precise functional group manipulation is required.

Application

• Pharmaceutical Intermediate: A critical reagent for the sulfonylation of amines, alcohols, and other nucleophiles in the multi-step synthesis of drug candidates and APIs.
• Peptide Chemistry: Used as a coupling agent or protecting group reagent in the synthesis of modified peptides and peptidomimetics.
• Agrochemical Synthesis: Employed in the production of sulfonamide-based herbicides, fungicides, and insecticides.
• Material Science: Serves as a building block for creating sulfonated polymers and advanced organic materials with specific electronic or ionic properties.
• Chemical Research & Development: A valuable tool in academic and industrial R&D labs for methodology development and exploring new synthetic pathways.
• Dye and Pigment Manufacturing: Used in the synthesis of sulfonamide-containing dyes and colorants.

Basic Information

Product Name	1-Benzenesulfonylimidazole
CAS No.	46248-01-5
Molecular Formula	C9H8N2O2S
Molecular Weight	208.24 g/mol
Synonyms	Benzenesulfonylimidazole; Imidazole, 1-(phenylsulfonyl)-; N-Benzenesulfonylimidazole; 1-(Phenylsulfonyl)-1H-imidazole; 1H-Imidazole, 1-(phenylsulfonyl)-; Benzenesulfonimidazole; BSI
EINECS	Contact for details

Quality Control

Our 1-Benzenesulfonylimidazole is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity assessment and NMR/IR for structural confirmation, to ensure it meets the high standards required for synthetic applications. A Certificate of Analysis (COA) detailing batch-specific results is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	97 - 101 °C
Loss on Drying	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.