Description

2-Cyclopenten-1-One, 4-Ethynyl-3,5-Dimethyl-, cis- (9Ci) is a specialized, high-purity organic building block featuring a unique cyclopentenone core functionalized with an ethynyl group. This compound is valued for its role as a versatile synthetic intermediate, enabling the construction of complex molecular architectures through reactions like cycloadditions and cross-couplings. It is primarily sought by research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors for the synthesis of novel active ingredients and functional molecules.

Application

• Pharmaceutical Intermediate: A key building block in the research and development of new drug candidates, particularly for constructing complex heterocyclic cores.
• Agrochemical Synthesis: Used in the creation of novel pesticides and herbicides, leveraging its reactive ethynyl group for structural diversification.
• Material Science Research: Serves as a precursor for developing advanced polymers, ligands, or organic electronic materials with tailored properties.
• Academic & Industrial R&D: Employed in methodological studies and discovery chemistry for exploring new synthetic pathways and reactions.
• Fine Chemical Production: Utilized in the custom synthesis of specialty chemicals and complex organic compounds for various high-value applications.

Basic Information

Product Name	2-Cyclopenten-1-One, 4-Ethynyl-3,5-Dimethyl-, cis- (9Ci)
CAS No.	65984-24-9
Molecular Formula	C9H10O
Molecular Weight	134.18 g/mol
Synonyms	4-Ethynyl-3,5-dimethyl-2-cyclopenten-1-one, cis-; cis-4-Ethynyl-3,5-dimethylcyclopent-2-en-1-one; (3aS,6aR)-3a,6a-Dimethyl-3a,6a-dihydro-4H-cyclopenta[b]furan-4-one (tautomeric form); 4-Ethynyl-3,5-dimethyl-2-cyclopentenone; 65984-24-9; 2-Cyclopenten-1-one, 4-ethynyl-3,5-dimethyl-, (Z)-
EINECS	Contact for details

Quality Control

Our 2-Cyclopenten-1-One, 4-Ethynyl-3,5-Dimethyl-, cis- (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific research or project requirements.

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 heat, sparks, and open flames. Due to its light-sensitive nature, prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 95% (Typical: 97-99%)
Water Content (KF)	≤ 0.5%

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