Description

4-Biphenylboronic Acid, Pinacol Ester is a high-purity, protected boronic acid derivative, a crucial intermediate in modern synthetic chemistry. Its primary value lies in its enhanced stability compared to the free boronic acid, making it an essential reagent for reliable Suzuki-Miyaura cross-coupling reactions. This compound is in high demand for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors, where it is used to construct complex biaryl frameworks.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing active pharmaceutical ingredients (APIs) and drug candidates via palladium-catalyzed cross-coupling.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides requiring specific biphenyl structures.
• Liquid Crystal & OLED Materials: Serves as a precursor for creating organic electronic materials and liquid crystal display (LCD) components.
• Polymer Chemistry: Enables the incorporation of biphenyl units into specialty polymers and advanced resins.
• Chemical Research & Development: A versatile reagent for academic and industrial R&D in organic synthesis and methodology development.
• Material Science: Used in the synthesis of metal-organic frameworks (MOFs) and other functional materials.

Basic Information

Product Name	4-Biphenylboronic Acid, Pinacol Ester
CAS No.	144432-80-4
Molecular Formula	C18H21BO2
Molecular Weight	280.17 g/mol
Synonyms	4-Biphenylboronic Acid Pinacol Ester; [1,1'-Biphenyl]-4-boronic Acid, Pinacol Ester; 4-(Pinacolboryl)biphenyl; 4-Biphenylboronic Acid Pinanediol Ester (common alternative); 4-Biphenylboronate Pinacol Ester; 4-Bpin-Biphenyl; (4-Biphenylyl)boronic Acid Pinacol Ester; p-Biphenylboronic Acid Pinacol Ester
EINECS	Contact for details

Quality Control

Our 4-Biphenylboronic Acid, Pinacol Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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