Description

1-Cyclopentene-1-Carboxylicacid,2-Propynylester(9Ci) is a specialized organic ester building block featuring a cyclopentene ring and a propargyl ester functional group. This unique molecular architecture makes it a valuable intermediate for synthesizing complex molecules in advanced research and development. It is primarily sought by pharmaceutical, agrochemical, and material science industries for applications requiring precise chemical modifications and the introduction of specific reactive handles.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of novel active pharmaceutical ingredients (APIs), particularly for introducing the propargyl moiety.
• Agrochemical Synthesis: Used in the creation of advanced crop protection agents and herbicides, where its reactive structure allows for targeted molecular design.
• Material Science Research: Acts as a monomer or cross-linking agent in the development of specialty polymers and advanced functional materials.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex organic frameworks, including natural product analogs.
• Click Chemistry Applications: The alkyne group makes it a suitable candidate for copper-catalyzed azide-alkyne cycloaddition (CuAAC) reactions, a cornerstone of bioconjugation and polymer chemistry.
• Ligand and Catalyst Development: Utilized in the synthesis of novel ligands and organometallic complexes for catalytic processes.

Basic Information

Product Name	1-Cyclopentene-1-Carboxylicacid,2-Propynylester(9Ci)
CAS No.	59253-94-0
Molecular Formula	C9H10O2
Molecular Weight	150.17 g/mol
Synonyms	2-Propynyl 1-cyclopentene-1-carboxylate; 1-Cyclopentene-1-carboxylic acid propargyl ester; Propargyl 1-cyclopentene-1-carboxylate; 1-Cyclopentene-1-carboxylic acid, 2-propynyl ester; 1-Cyclopentenecarboxylic acid, 2-propynyl ester; 1-Cyclopentene-1-Carboxylicacid,2-Propynylester; 2-Propynyl cyclopent-1-enecarboxylate
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carboxylicacid,2-Propynylester(9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity, identity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay, purity by HPLC, and identification are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Recommended storage temperature is between 15°C and 25°C. Keep away from strong bases and incompatible materials such as strong oxidizing agents.

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.