Description

1-(2-Bromophenylsulfonyl)-3,5-Dimethyl-1H-Pyrazole is a high-purity, specialized heterocyclic sulfonamide building block of significant interest in advanced organic synthesis. This compound is valued for its role as a key intermediate in the development of novel active pharmaceutical ingredients (APIs) and agrochemicals, where its unique bromo-sulfonyl-pyrazole structure enables precise molecular modifications. It is primarily sought after by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and material science sectors for constructing complex molecules with targeted biological or physical properties.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting enzyme inhibition.
• Agrochemical Research: Used in the development of new-generation herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Chemical Biology Probe Synthesis: Serves as a precursor for creating molecular probes to study biological pathways and protein functions.
• Material Science Precursor: Potential use in the synthesis of advanced organic materials, such as ligands for catalysts or components in organic electronics.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for client-specific synthetic routes.
• Academic & Industrial R&D: Essential for exploratory chemistry in university laboratories and corporate research centers focusing on sulfonamide chemistry.

Basic Information

Product Name	1-(2-Bromophenylsulfonyl)-3,5-Dimethyl-1H-Pyrazole
CAS No.	957120-77-3
Molecular Formula	C11H11BrN2O2S
Molecular Weight	315.19 g/mol
Synonyms	1-[(2-Bromophenyl)sulfonyl]-3,5-dimethyl-1H-pyrazole; 3,5-Dimethyl-1-(2-bromobenzenesulfonyl)-1H-pyrazole; 1H-Pyrazole, 1-[(2-bromophenyl)sulfonyl]-3,5-dimethyl-; 1-(2-Bromobenzenesulfonyl)-3,5-dimethylpyrazole; 2-Bromo-N-(3,5-dimethylpyrazol-1-yl)benzenesulfonamide; BPSDP
EINECS	Contact for details

Quality Control

Our 1-(2-Bromophenylsulfonyl)-3,5-Dimethyl-1H-Pyrazole is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, documenting all critical quality attributes. Our production adheres to cGMP principles where applicable, ensuring reliability for research and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. The container should be kept tightly sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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