Description

4-Cyclopentylphenylboronic Acid Pinacol Ester is a high-purity, protected boronic acid derivative essential for advanced organic synthesis. This compound serves as a critical building block in cross-coupling reactions, enabling the efficient construction of complex molecular architectures. It is primarily utilized by research institutions and pharmaceutical companies engaged in the development of novel active pharmaceutical ingredients (APIs) and functional materials.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key reagent for forming carbon-carbon bonds between aryl/heteroaryl halides and this boronic ester, crucial in medicinal chemistry.
• Pharmaceutical Intermediate Synthesis: Used in the research and development of potential drug candidates, particularly those requiring the cyclopentylphenyl moiety.
• Ligand and Catalyst Development: Serves as a precursor for creating specialized ligands used in asymmetric catalysis and material science.
• Material Science Research: Employed in the synthesis of organic electronic materials, such as those for OLEDs or semiconductors, where specific aryl groups are needed.
• Agrochemical Synthesis: Used in creating novel compounds for crop protection research.
• Chemical Biology Probes: Acts as a building block for synthesizing molecules used to study biological processes.

Basic Information

Product Name	4-Cyclopentylphenylboronic Acid Pinacol Ester
CAS No.	861965-54-0
Molecular Formula	C₁₇H₂₅BO₂
Molecular Weight	272.19 g/mol
Synonyms	4-Cyclopentylbenzeneboronic Acid Pinacol Ester; (4-Cyclopentylphenyl)boronic Acid Pinacol Ester; 2-(4-Cyclopentylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 4-Cyclopentylphenylboronic Acid, Pinacol Ester; Pinacol (4-Cyclopentylphenyl)boronate; 4-Cyclopentylphenyl-Bpin; B-(4-Cyclopentylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
EINECS	Contact for details

Quality Control

Our 4-Cyclopentylphenylboronic Acid Pinacol Ester is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and development applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to cGMP principles where applicable to support our clients in regulated development pathways.

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). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) when possible to maintain stability and purity.

Specification

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

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