Description

Cyclopentanone, 2-(2E)-2-Butenyl-2-Methyl-5-(1-Methylethyl)-, (2S)- (9Ci) is a high-purity, chiral cyclopentanone derivative with the CAS number 836628-77-4. This compound serves as a valuable chiral building block and intermediate in advanced organic synthesis, particularly for the development of complex molecules with specific stereochemistry. It is essential for research and development chemists in the pharmaceutical, agrochemical, and fragrance industries who require precise stereochemical control in their synthetic pathways.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs) and drug candidates, especially those requiring specific enantiomeric purity.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides where the stereochemistry of the molecule impacts biological activity.
• Fragrance & Flavor Ingredient: Acts as a precursor for the synthesis of complex, naturally-inspired odorants and flavor compounds.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex natural products, macrocycles, and other specialized organic compounds.
• Material Science Research: Potential intermediate in the development of specialty polymers or liquid crystals where chiral centers influence material properties.

Basic Information

Product Name	Cyclopentanone, 2-(2E)-2-Butenyl-2-Methyl-5-(1-Methylethyl)-, (2S)- (9Ci)
CAS No.	836628-77-4
Molecular Formula	C13H22O
Molecular Weight	194.31 g/mol
Synonyms	(2S)-2-[(2E)-But-2-en-1-yl]-2-methyl-5-(propan-2-yl)cyclopentan-1-one; (2S)-2-[(2E)-2-Butenyl]-2-methyl-5-(1-methylethyl)cyclopentanone; (-)-2-[(2E)-2-Butenyl]-2-methyl-5-isopropylcyclopentanone; (S)-2-((E)-But-2-en-1-yl)-2-methyl-5-isopropylcyclopentanone; 2-Butenyl-2-methyl-5-isopropylcyclopentanone, (2S)-; Chiral Cyclopentanone Derivative; 836628-77-4
EINECS	Contact for details

Quality Control

Our Cyclopentanone, 2-(2E)-2-Butenyl-2-Methyl-5-(1-Methylethyl)-, (2S)- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis (HPLC/GC), identity confirmation (IR, NMR), and impurity profiling to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing purity, enantiomeric excess, and full specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area. Recommended storage temperature is 2-8°C for long-term stability. This material is light-sensitive and easily oxidized; prolonged exposure to air, light, or elevated temperatures should be avoided.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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