Description

4-Bromo-1-Cyclopentylpyrazole is a high-purity, versatile heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its functionalized pyrazole ring, which serves as a critical scaffold for constructing complex molecules with targeted biological activity. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, where it is used to develop new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, inflammation, and metabolic diseases.
• Agrochemical Research: Used to develop new generations of herbicides, fungicides, and insecticides by acting as a core heterocyclic moiety in active molecule design.
• Chemical Biology Probe: Serves as a versatile scaffold for creating molecular probes to study enzyme function and protein-protein interactions in biological systems.
• Material Science Research: Investigated as a building block for advanced organic materials, such as ligands for catalysts or components in organic electronic devices.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of bespoke compounds and small-scale API development.

Basic Information

Product Name	4-Bromo-1-Cyclopentylpyrazole
CAS No.	1012880-01-1
Molecular Formula	C8H11BrN2
Molecular Weight	215.09 g/mol
Synonyms	1-Cyclopentyl-4-bromopyrazole; 4-Bromo-1-cyclopentyl-1H-pyrazole; 4-Bromo-1-cyclopentylpyrazole; 1H-Pyrazole, 4-bromo-1-cyclopentyl-; 4-Bromocyclopentylpyrazole; 4-Bromo-1-(cyclopentyl)pyrazole; 4-Bromo-1-cyclopentyl-1H-pyrazole; 4-Brom-1-cyclopentylpyrazol (German)
EINECS	Contact for details

Quality Control

Our 4-Bromo-1-Cyclopentylpyrazole is manufactured under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide full traceability and detailed Certificates of Analysis (COA) with each shipment, confirming compliance with your specified requirements and industry best practices for fine chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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