Description

Cyclopentanone, 3-Hydroxy-4-Methyl-2-(1-Methylethylidene)-, (4S)- (9Ci) is a high-purity, stereochemically defined cyclopentanone derivative, valued for its role as a versatile chiral building block in advanced organic synthesis. Its specific stereochemistry and functional groups make it a critical intermediate for constructing complex molecular architectures with precise three-dimensional control. This compound is essential for research and development chemists in the pharmaceutical, agrochemical, and fine chemical industries seeking to develop novel active ingredients and specialty materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring complex, stereospecific molecules.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides where specific stereochemistry influences biological activity.
• Fine Chemical Production: Serves as a building block for creating specialty chemicals, including fragrances, flavors, and advanced materials.
• Academic & Industrial R&D: A valuable reagent for methodological development in asymmetric synthesis and catalysis studies within chemistry laboratories.
• Material Science Precursor: Potential use in the development of specialized polymers or organic electronic materials with tailored properties.

Basic Information

Product Name	Cyclopentanone, 3-Hydroxy-4-Methyl-2-(1-Methylethylidene)-, (4S)- (9Ci)
CAS No.	352421-99-9
Molecular Formula	C10H16O2
Molecular Weight	168.23 g/mol
Synonyms	(4S)-3-Hydroxy-4-methyl-2-(1-methylethylidene)cyclopentanone; (4S)-3-Hydroxy-4-methyl-2-(propan-2-ylidene)cyclopentanone; (4S)-3-Hydroxy-4-methyl-2-isopropylidenecyclopentanone; (S)-3-Hydroxy-4-methyl-2-(1-methylethylidene)cyclopentanone; 2-Isopropylidene-3-hydroxy-4-methylcyclopentanone, (4S)-; Chiral Hydroxy-Methyl Cyclopentanone Derivative; Contact for additional trade names and abbreviations.
EINECS	Contact for details

Quality Control

Our production of Cyclopentanone, 3-Hydroxy-4-Methyl-2-(1-Methylethylidene)-, (4S)- (9Ci) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including chiral purity analysis, to ensure identity, strength, and composition meet exacting standards. Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data are provided to guarantee traceability and batch-to-batch consistency for your critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (typically 15-25°C). Keep away from incompatible materials. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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