Description

3-Ethyl-4-Formylphenylboronic 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 precise construction of complex molecular architectures. It is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries.

Application

• Suzuki-Miyaura Cross-Coupling Reactions: A key arylboron reagent for forming carbon-carbon bonds in the synthesis of biaryl compounds.
• Pharmaceutical Intermediate: Used in the research and development of active pharmaceutical ingredients (APIs), particularly for molecules containing substituted biphenyl or aromatic aldehyde motifs.
• Agrochemical Synthesis: Serves as a precursor in creating novel herbicides, fungicides, and insecticides with specific aromatic frameworks.
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for catalysis and organometallic chemistry.
• Organic Electronic Materials: A building block for π-conjugated systems used in OLEDs, organic photovoltaics, and semiconductors.
• Chemical Biology Probes: Useful for synthesizing tagged molecules or inhibitors for proteomics and target identification studies.

Basic Information

Product Name	3-Ethyl-4-Formylphenylboronic Acid Pinacol Ester
CAS No.	1352656-54-2
Molecular Formula	C15H21BO3
Molecular Weight	260.14 g/mol
Synonyms	4-Formyl-3-ethylbenzeneboronic acid pinacol ester; (3-Ethyl-4-formylphenyl)boronic acid pinacol ester; 2-(3-Ethyl-4-formylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane; 3-Ethyl-4-formylbenzeneboronic acid pinacol ester; Boronic acid, B-(3-ethyl-4-formylphenyl)-, 1,1-dimethylethyl ester; Pinacol (3-ethyl-4-formylphenyl)boronate
EINECS	Contact for details

Quality Control

Our 3-Ethyl-4-Formylphenylboronic Acid Pinacol Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and GC, to ensure high chemical purity and identity confirmation. Certificates of Analysis (COA) with lot-specific data are provided to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic nature, it is recommended to handle the material under an inert atmosphere (e.g., nitrogen or argon) for long-term storage and to minimize exposure to moisture. Recommended storage temperature: 2-8°C for prolonged stability.

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.