Description

1-Cyclopentene-1-Carbonyl Chloride, 5-(Acetyloxy)-3-Oxo-, (R)- (9Ci) is a high-purity, chiral building block of significant interest in advanced organic synthesis. Its value lies in its functionalized cyclopentene core and acid chloride group, which enable precise stereoselective modifications critical for constructing complex molecular architectures. This compound is primarily needed by research and development teams in the pharmaceutical and agrochemical industries for the synthesis of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring stereochemical precision.
• Agrochemical Synthesis: Used in the development of advanced, enantiomerically pure pesticides and herbicides where specific stereochemistry impacts biological activity.
• Fine Chemical Production: Serves as a specialized building block for synthesizing complex fragrance compounds, flavors, and other high-value specialty chemicals.
• Academic & Industrial Research: Employed in methodological studies and process chemistry for developing new asymmetric synthesis routes and catalytic transformations.
• Material Science Precursor: Potential use in the synthesis of specialized polymers or organic frameworks with tailored properties, leveraging its reactive functional groups.

Basic Information

Product Name	1-Cyclopentene-1-Carbonyl Chloride, 5-(Acetyloxy)-3-Oxo-, (R)- (9Ci)
CAS No.	76865-78-6
Molecular Formula	C8H7ClO4
Molecular Weight	202.59 g/mol
Synonyms	(R)-5-(Acetyloxy)-3-oxo-1-cyclopentene-1-carbonyl chloride; (5R)-5-(Acetyloxy)-3-oxo-1-cyclopentene-1-carboxylic acid chloride; 1-Cyclopentene-1-carboxylic acid, 5-(acetyloxy)-3-oxo-, (R)-, chloride; Levodropropizine Impurity; Chiral Cyclopentenone Acid Chloride Derivative
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carbonyl Chloride, 5-(Acetyloxy)-3-Oxo-, (R)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for research and process development. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and decomposition. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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