Description

1-Cyclopentyl-4-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole is a high-purity boronic ester pinacol ester derivative, a critical building block in modern synthetic organic chemistry. Its value lies in enabling efficient, selective cross-coupling reactions, which are fundamental for constructing complex molecular architectures. This advanced intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science sectors who require reliable, high-quality reagents for drug discovery and development.

Application

• Pharmaceutical Intermediate: A key precursor in Suzuki-Miyaura cross-coupling reactions for synthesizing novel active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used in the research and production of advanced crop protection agents and herbicides.
• Material Science Research: Serves as a building block for creating organic electronic materials, such as those used in OLEDs and semiconductors.
• Chemical Biology & Probe Development: Employed in the synthesis of molecular probes and tools for studying biological processes.
• Catalyst & Ligand Development: Acts as a starting material for synthesizing novel catalysts and ligands used in asymmetric synthesis.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs for the production of bespoke compounds and complex molecules under cGMP conditions.

Basic Information

Item	Details
Product Name	1-Cyclopentyl-4-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole
CAS No.	1233526-60-7
Molecular Formula	C14H23BN2O2
Molecular Weight	262.16 g/mol
Synonyms	1-Cyclopentyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; 1-Cyclopentyl-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole; 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-cyclopentyl-1H-pyrazole; 1-Cyclopentyl-4-(pinacolatoboryl)-1H-pyrazole; 1-Cyclopentyl-4-(pinacolboron)-1H-pyrazole; 1-Cyclopentyl-4-Bpin-1H-pyrazole; 1-Cyclopentyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole
EINECS	Contact for details

Quality Control

Our 1-Cyclopentyl-4-(4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan-2-Yl)-1H-Pyrazole is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our quality commitment supports applications requiring high standards, including cGMP-compliant pharmaceutical synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic nature, the container should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and degradation. Recommended long-term storage temperature is 2-8°C. Allow the sealed container to equilibrate to room temperature before opening to minimize condensation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (HPLC)	Conforms
Identification (NMR)	Conforms
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.