Description

2-Chloro-5-Cyanobenzene-1,4-Diboronic Acid Pinacol Ester is a high-purity, multi-functional boronic ester building block essential for modern synthetic chemistry. Its value lies in enabling precise carbon-carbon bond formation via Suzuki-Miyaura cross-coupling reactions, a cornerstone for constructing complex molecular architectures. This compound is critically needed by researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors for developing new active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing novel active pharmaceutical ingredients (APIs), especially in oncology and CNS drug discovery.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides with tailored properties.
• Material Science: Serves as a monomer or cross-linker in the production of organic electronic materials, such as OLEDs and OFETs.
• Ligand & Catalyst Development: Precursor for creating sophisticated ligands and organometallic catalysts used in asymmetric synthesis.
• Chemical Biology Probes: Utilized in the synthesis of molecular probes for studying biological pathways and protein functions.
• Polymer Chemistry: Enables the synthesis of specialty polymers and dendrimers with precise structural control.

Basic Information

Product Name	2-Chloro-5-Cyanobenzene-1,4-Diboronic Acid Pinacol Ester
CAS No.	863868-45-5
Molecular Formula	C₁₈H₂₄B₂ClNO₄
Molecular Weight	375.46 g/mol
Synonyms	1,4-Phenylenebis(boronic acid), 2-chloro-5-cyano-, bis(pinacol) ester; 2-Chloro-5-cyanobenzene-1,4-bis(boronic acid pinacol ester); 2-Chloro-5-cyanophenyl-1,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane); 1,4-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-chloro-5-cyanobenzene; 2-Chloro-5-cyano-1,4-phenylenebisboronic acid bis(pinacol) ester; 863868-45-5; 2-Cl-5-CN-Ph-1,4-Bpin₂
EINECS	Contact for details

Quality Control

Our 2-Chloro-5-Cyanobenzene-1,4-Diboronic Acid Pinacol Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing all specifications are available upon request to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C or as indicated on the label. This material is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) when possible to maintain stability. Keep away from incompatible materials.

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.