Description

Boronic Acid, (4-Acetyl-2-Thienyl)- (9Ci) is a specialized organoboron compound with the CAS registry number 689247-77-6. This chemical serves as a versatile and critical building block in modern synthetic organic chemistry, particularly in cross-coupling reactions. It is primarily utilized by research institutions and industrial R&D departments engaged in the development of pharmaceuticals, agrochemicals, and advanced materials.

Application

• Pharmaceutical Intermediate: A key precursor in Suzuki-Miyaura cross-coupling reactions for constructing complex biaryl structures found in active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides that require specific thiophene-based architectures.
• Material Science Research: Employed in the synthesis of organic electronic materials, such as polymers and small molecules for OLEDs and organic photovoltaics.
• Chemical Biology & Probe Development: Serves as a handle for bioconjugation and the creation of molecular probes for studying biological processes.
• Catalyst & Ligand Preparation: Acts as a starting material for synthesizing novel boron-containing catalysts and ligands for asymmetric synthesis.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for custom synthesis projects requiring high-purity boronic acid derivatives.

Basic Information

Product Name	Boronic Acid, (4-Acetyl-2-Thienyl)- (9Ci)
CAS No.	689247-77-6
Molecular Formula	C7H7BO3S
Molecular Weight	181.99 g/mol
Synonyms	(4-Acetylthiophen-2-yl)boronic acid; 4-Acetyl-2-thienylboronic acid; 2-(4-Acetylthienyl)boronic acid; (4-Acetyl-2-thienyl)boronic acid; 4-Acetylthiophene-2-boronic acid; Boronic acid, B-(4-acetyl-2-thienyl)-; 689247-77-6
EINECS	Contact for details

Quality Control

Our Boronic Acid, (4-Acetyl-2-Thienyl)- (9Ci) 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) with detailed specifications are provided and available upon request to support your quality assurance protocols.

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 product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) for long-term storage to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥95% (Typical 97-99%)
Water Content (KF)	≤1.0%

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