Description

4-Carboxaldehydebenzocyclobutene is a high-value, multifunctional aromatic aldehyde building block featuring a strained benzocyclobutene core. This unique structure makes it a critical intermediate for synthesizing advanced materials and complex organic molecules, particularly in pharmaceutical and materials science research. It is essential for researchers and manufacturers developing novel polymers, liquid crystals, and active pharmaceutical ingredients (APIs) where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), especially those requiring strained-ring systems.
• Advanced Material Synthesis: Serves as a monomer or precursor for high-performance polymers, liquid crystals, and organic semiconductors.
• Organic Synthesis & Research: A versatile reagent in Diels-Alder reactions and other cycloadditions for constructing complex polycyclic frameworks in academic and industrial R&D.
• Agrochemical Development: Used in the research and synthesis of new generation herbicides and pesticides with specific activity profiles.
• Cross-coupling Reactions: The aldehyde functionality allows for further derivatization via reactions like Suzuki or Heck cross-coupling to create diverse chemical libraries.

Basic Information

Product Name	4-Carboxaldehydebenzocyclobutene
CAS No.	112892-88-3
Molecular Formula	C9H6O
Molecular Weight	130.14 g/mol
Synonyms	Benzocyclobutene-4-carboxaldehyde; 4-Formylbenzocyclobutene; 1,2-Dihydro-4-formylbenzocyclobutene; BCB-4-Carboxaldehyde; 4-Aldehydebenzocyclobutene; 4-BCB-CHO; (Benzocyclobuten-4-yl)methanal
EINECS	Contact for details

Quality Control

Our 4-Carboxaldehydebenzocyclobutene is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for research and commercial synthesis. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality management system is designed to meet the stringent requirements of our global customer base in advanced chemical sectors.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. This compound is easily oxidized and light-sensitive; minimize exposure to air and light during handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Related Substances (HPLC)	Total impurities ≤ 2.0%
Water Content (KF)	≤ 0.5%

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