Description

3-Carboxy-5-Methylphenylboronic Acid is a versatile boronic acid derivative that serves as a critical building block in modern synthetic chemistry. Its bifunctional structure, featuring both a boronic acid and a carboxylic acid group, makes it an invaluable reagent for constructing complex molecules via cross-coupling and other transformations. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to develop active ingredients and advanced materials.

Application

• Pharmaceutical Intermediates: A key precursor in Suzuki-Miyaura cross-coupling reactions for synthesizing novel drug candidates, particularly in oncology and CNS therapeutic areas.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators requiring specific aryl-boronic acid motifs.
• Material Science: Serves as a monomer or functionalization agent in the production of specialty polymers, liquid crystals, and organic electronic materials.
• Chemical Research & Development: A valuable tool for academic and industrial R&D labs exploring new catalytic processes and constructing complex molecular libraries.
• Diagnostic Reagents: Potential use in the synthesis of probes and sensors for biochemical detection and analysis.

Basic Information

Item	Details
Product Name	3-Carboxy-5-Methylphenylboronic Acid
CAS No.	1150114-66-1
Molecular Formula	C9H11BO4
Molecular Weight	193.99 g/mol
Synonyms	(3-Carboxy-5-methylphenyl)boronic acid; 5-Methyl-3-boronobenzoic acid; 3-Borono-5-methylbenzoic acid; 3-Carboxy-5-methylbenzeneboronic acid; 5-Methyl-3-carboxyphenylboronic acid; Benzoic acid, 3-borono-5-methyl-; CAS 1150114-66-1
EINECS	Contact for details

Quality Control

Our 3-Carboxy-5-Methylphenylboronic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high purity and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specification results. Our quality commitment ensures the material meets the stringent requirements for research and cGMP-grade pharmaceutical intermediate applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture. For long-term storage, consider using desiccants or an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Heavy Metals	≤ 20 ppm

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