Description

3-Buten-2-One,4-[(1S,2R)-2-(2-Oxopropyl)Cyclopentyl]-,(3E)-(9Ci) is a high-purity, stereochemically defined advanced intermediate used in complex organic synthesis. Its value lies in its precise molecular architecture, which serves as a critical building block for the development of novel active pharmaceutical ingredients (APIs) and fine chemicals. This compound is essential for R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create molecules with specific chiral centers and functional groups.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the multi-step synthesis of proprietary drug candidates, particularly in oncology and central nervous system (CNS) therapeutic areas.
• Agrochemical Research: Used in the development of new-generation pesticides and herbicides where specific stereochemistry is crucial for biological activity.
• Fine Chemical Synthesis: Serves as a versatile precursor for creating complex fragrance molecules, flavors, and other high-value specialty chemicals.
• Academic & Contract Research: Employed in university and CRO laboratories for methodological studies in asymmetric synthesis and total synthesis projects.
• Material Science Precursor: Potential use in the synthesis of specialized monomers for advanced polymeric materials with tailored properties.

Basic Information

Product Name	3-Buten-2-One,4-[(1S,2R)-2-(2-Oxopropyl)Cyclopentyl]-,(3E)-(9Ci)
CAS No.	765288-13-9
Molecular Formula	C11H16O2
Molecular Weight	180.24 g/mol
Synonyms	(3E)-4-[(1S,2R)-2-(2-Oxopropyl)cyclopentyl]but-3-en-2-one; (3E)-4-[(1S,2R)-2-Acetonylcyclopentyl]-3-buten-2-one; 4-[(1S,2R)-2-(2-Oxopropyl)cyclopentyl]-3-buten-2-one, (3E)-; (E)-4-((1S,2R)-2-(2-Oxopropyl)cyclopentyl)but-3-en-2-one; CAS 765288-13-9
EINECS	Contact for details

Quality Control

Our 3-Buten-2-One,4-[(1S,2R)-2-(2-Oxopropyl)Cyclopentyl]-,(3E)-(9Ci) is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including chiral HPLC and NMR, to ensure high chemical and enantiomeric purity critical for sensitive synthetic pathways. Certificates of Analysis (COA) with detailed chromatographic data are provided to guarantee traceability, consistency, and compliance with your research or cGMP starting material requirements.

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). Keep the container tightly sealed under an inert atmosphere to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
Water Content (KF)	≤ 0.5%

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