Description

1,4-Cyclohexadiene-1-Carboxaldehyde, 4-Ethynyl- (9Ci) is a specialized, high-value organic building block featuring a unique conjugated diene and terminal alkyne functional groups on a cyclohexadiene scaffold. This compound matters for its versatility as a key intermediate in advanced organic synthesis, enabling the construction of complex molecular architectures through reactions like Diels-Alder cycloadditions and Sonogashira couplings. It is primarily needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries for creating novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel drug candidates, particularly for constructing complex, polycyclic core structures.
• Agrochemical Research: Used in developing new active ingredients for crop protection agents, leveraging its reactive sites for structural diversification.
• Materials Science: Acts as a monomer or cross-linking agent in the development of specialty polymers and advanced organic electronic materials.
• Academic & Industrial R&D: A valuable reagent for methodological studies in organic chemistry, including catalysis research and the development of new synthetic transformations.
• Fine Chemical Synthesis: Employed in the multi-step production of complex fragrances, dyes, and other high-value specialty chemicals.

Basic Information

Product Name	1,4-Cyclohexadiene-1-Carboxaldehyde, 4-Ethynyl- (9Ci)
CAS No.	178742-96-6
Molecular Formula	C9H8O
Molecular Weight	132.16 g/mol
Synonyms	4-Ethynyl-1,4-cyclohexadiene-1-carboxaldehyde; 4-Ethynyl-1,4-cyclohexadiene-1-carbaldehyde; 4-Ethynylcyclohexa-1,4-diene-1-carbaldehyde; 4-Ethynyl-1,4-cyclohexadienecarboxaldehyde; 1,4-Cyclohexadiene-1-carboxaldehyde, 4-ethynyl-
EINECS	Contact for details

Quality Control

Our 1,4-Cyclohexadiene-1-Carboxaldehyde, 4-Ethynyl- (9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. Due to its sensitivity, keep away from oxidizing agents and strong acids.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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