Description

4-Borono-2-Ethylbenzoic Acid is a high-value boronic acid derivative and a key synthetic intermediate in modern organic chemistry. Its primary commercial value lies in its role as a versatile building block for the Suzuki-Miyaura cross-coupling reaction, a cornerstone methodology for forming carbon-carbon bonds. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries developing novel active ingredients, as well as in advanced materials science for creating complex organic frameworks.

Application

• Pharmaceutical Intermediate: A critical building block for synthesizing active pharmaceutical ingredients (APIs) via palladium-catalyzed cross-coupling reactions.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides requiring specific aryl-boronic acid motifs.
• Material Science Research: Serves as a precursor for creating organic electronic materials, such as those used in OLEDs and organic photovoltaics.
• Ligand and Catalyst Development: Employed in the synthesis of sophisticated ligands for catalysis and molecular recognition applications.
• Chemical Biology Probes: Utilized to create tagged molecules for studying biological processes and protein interactions.
• Custom Synthesis and Contract Manufacturing: Supplied to fine chemical companies for use in bespoke synthesis projects for clients.

Basic Information

Product Name	4-Borono-2-Ethylbenzoic Acid
CAS No.	851335-16-5
Molecular Formula	C9H11BO4
Molecular Weight	193.99 g/mol
Synonyms	2-Ethyl-4-boronobenzoic Acid; 4-Carboxy-3-ethylbenzeneboronic Acid; (4-Carboxy-3-ethylphenyl)boronic Acid; B-(4-Carboxy-3-ethylphenyl)boronic Acid; 2-Ethyl-4-carboxyphenylboronic Acid; 851335-16-5; 4-Borono-2-ethyl-benzoic acid
EINECS	Contact for details

Quality Control

Our 4-Borono-2-Ethylbenzoic Acid is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for sensitive cross-coupling reactions. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability, consistency, and reliability for your critical R&D and production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to maintain optimal purity and reactivity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%

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