Description

4-Hydroxymethyl-3-Ethylphenylboronic Acid Pinacol Ester is a high-purity, synthetically valuable boronic ester derivative. This compound serves as a crucial protected intermediate in modern organic synthesis, particularly in cross-coupling reactions like the Suzuki-Miyaura reaction. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-quality building blocks for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key protected building block for the synthesis of active pharmaceutical ingredients (APIs) and drug candidates via palladium-catalyzed cross-coupling.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides requiring specific biphenyl or aryl structures.
• Material Science: Serves as a monomer or precursor in the creation of organic electronic materials, such as polymers for OLEDs or organic photovoltaics.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D labs for constructing complex organic molecules and exploring new synthetic methodologies.
• Ligand and Catalyst Preparation: Utilized as a precursor for synthesizing specialized ligands or organometallic catalysts.
• Custom Synthesis: An important starting material for contract research and manufacturing organizations (CROs/CMOs) producing bespoke fine chemicals.

Basic Information

Item	Details
Product Name	4-Hydroxymethyl-3-Ethylphenylboronic Acid Pinacol Ester
CAS No.	2121511-40-6
Molecular Formula	C15H23BO3
Molecular Weight	262.15 g/mol
Synonyms	3-Ethyl-4-(hydroxymethyl)phenylboronic acid pinacol ester; (3-Ethyl-4-(hydroxymethyl)phenyl)boronic acid pinacol ester; 4-(Hydroxymethyl)-3-ethylbenzeneboronic acid pinacol ester; 2-(3-Ethyl-4-(hydroxymethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; PINACOL (3-ETHYL-4-(HYDROXYMETHYL)PHENYL)BORONATE
EINECS	Contact for details

Quality Control

Our 4-Hydroxymethyl-3-Ethylphenylboronic Acid Pinacol Ester is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high chemical purity and identity confirmation. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality commitment aligns with the standards expected for fine chemical and pharmaceutical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation.

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%

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