Description

4-Carboxylbenzocyclobutene is a high-value, multifunctional organic building block featuring a strained cyclobutene ring fused to a benzoic acid moiety. This unique structure makes it a critical intermediate for synthesizing advanced materials and complex pharmaceutical compounds. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel products with specific performance characteristics.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting the central nervous system.
• Agrochemical Synthesis: Used to create novel herbicides and pesticides with enhanced efficacy and environmental profiles.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for producing high-performance polymers, liquid crystals, and advanced resins.
• Ligand & Catalyst Development: Employed in organometallic chemistry to create novel ligands for catalytic systems.
• Organic Synthesis Building Block: Utilized in Diels-Alder reactions and other cycloadditions to construct complex polycyclic frameworks.
• Research & Development: A valuable tool for academic and industrial R&D in exploring new chemical entities and reaction pathways.

Basic Information

Product Name	4-Carboxylbenzocyclobutene
CAS No.	875-94-5
Molecular Formula	C9H6O2
Molecular Weight	146.14 g/mol
Synonyms	4-Carboxybenzocyclobutene; Benzocyclobutene-4-carboxylic Acid; 1,2-Dihydrobenzocyclobutene-4-carboxylic Acid; 4-BCB-COOH; BCB-4-COOH; 4-(Carboxy)benzocyclobutene; Cyclobutabenzene-4-carboxylic Acid
EINECS	212-875-5

Quality Control

Our 4-Carboxylbenzocyclobutene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. The container must be kept tightly closed in a dry and well-ventilated place.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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