Description

1,3-Cyclobutadiene, 1,2,3,4-Tetraethynyl- (9Ci) is a highly functionalized, advanced organic building block characterized by its unique cyclobutadiene core substituted with four ethynyl groups. This compound matters as a sophisticated precursor in cutting-edge materials science and pharmaceutical research, enabling the synthesis of complex molecular architectures and novel carbon-rich frameworks. It is primarily needed by R&D chemists and process development scientists in the fields of organic electronics, specialty polymers, and medicinal chemistry for creating new functional materials and bioactive compounds.

Application

This specialized chemical serves as a critical intermediate in advanced research and development. Key application areas include:

• Advanced Organic Electronics: As a precursor for novel carbon-based materials, conductive polymers, and molecular wires for organic semiconductors and photovoltaic devices.
• Pharmaceutical Research & Development: Serving as a complex scaffold or building block in the synthesis of potential drug candidates and bioactive molecules.
• Specialty Polymer Synthesis: Enabling the creation of high-performance polymers with unique thermal, mechanical, or optical properties through polymerization of the ethynyl groups.
• Coordination Chemistry & Ligand Design: Acting as a multi-dentate ligand for constructing novel metal-organic frameworks (MOFs) and catalysts.
• Materials Science Research: For developing new carbon allotropes, nanostructures, and energy storage materials.
• Academic & Industrial R&D: Fundamental research in synthetic organic chemistry, exploring new reaction pathways and strained ring systems.

Basic Information

Item	Detail
Product Name	1,3-Cyclobutadiene, 1,2,3,4-Tetraethynyl- (9Ci)
CAS No.	223778-10-7
Molecular Formula	C12H4
Molecular Weight	148.16 g/mol
Synonyms	Tetraethynylcyclobutadiene; 1,2,3,4-Tetraethynyl-1,3-cyclobutadiene; Cyclobutadiene, tetraethynyl-; 1,3-Cyclobutadiene, 1,2,3,4-tetraethynyl-; Tetraethynyl[4]radialene; 1,2,3,4-Tetraethynylcyclobutadiene
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. For this advanced research chemical, quality is assured through analytical techniques including NMR, HPLC, and GC-MS to verify identity and purity. Certificates of Analysis (COA) detailing batch-specific results are available upon request. We adhere to a cGMP-compliant quality management system where applicable for traceability and consistency in production.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at a controlled room temperature (15-25°C/59-77°F) in a cool, dry, well-ventilated area. Keep away from heat, sparks, open flames, and incompatible materials. Due to the reactive nature of the ethynyl groups and potential instability of the cyclobutadiene ring, this material should be handled and stored by trained personnel only.

Specification

Item	Specification
Appearance	Off-white to yellow crystalline solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95% (Research Grade)
Purity (NMR)	Conforms
Solubility	Soluble in common organic solvents (e.g., THF, DCM)

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