Description

Cyclopentanone, 3-Butyl-4-Methyl-, (3R,4R)-Rel- (9Ci) is a chiral, substituted cyclopentanone derivative of significant interest in advanced organic synthesis. This compound matters as a high-value, stereochemically defined building block for the construction of complex molecules, particularly in pharmaceutical and agrochemical research. It is needed by R&D chemists and process development scientists working on active pharmaceutical ingredients (APIs), fine chemicals, and novel materials where precise stereochemistry is critical for biological activity or material properties.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of novel drug candidates, particularly in classes requiring complex carbocyclic or spirocyclic frameworks.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides where specific stereoisomers exhibit enhanced efficacy.
• Asymmetric Catalysis Ligand Precursor: Serves as a starting material for the synthesis of chiral ligands used in enantioselective catalytic reactions.
• Fine Chemical Production: Employed in the multi-step synthesis of specialty chemicals, flavors, and fragrances requiring high stereochemical purity.
• Material Science Research: Investigated as a monomer or precursor for novel polymers with specific optical or structural properties.

Basic Information

Product Name	Cyclopentanone, 3-Butyl-4-Methyl-, (3R,4R)-Rel- (9Ci)
CAS No.	373354-63-3
Molecular Formula	C10H18O
Molecular Weight	154.25 g/mol
Synonyms	(3R,4R)-3-Butyl-4-methylcyclopentanone; rel-(3R,4R)-3-Butyl-4-methylcyclopentan-1-one; 3-Butyl-4-methylcyclopentanone (rel-(3R,4R)-); (3R*,4R*)-3-Butyl-4-methylcyclopentanone; 1-Cyclopentanone, 3-butyl-4-methyl-, (3R,4R)-rel-; (rel-3R,4R)-3-Butyl-4-methylcyclopentanone
EINECS	Contact for details

Quality Control

Our chiral intermediates are produced under strict quality management systems to ensure batch-to-batch consistency and high enantiomeric purity. Each lot is characterized by advanced analytical techniques including chiral HPLC, GC, NMR, and optical rotation measurement. A comprehensive Certificate of Analysis (COA) detailing identity, purity (assay), enantiomeric excess (ee), and impurity profile is provided with every shipment, supporting compliance with cGMP and ISO standards for research and development use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0% ee
Optical Rotation	Provided on COA
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.