Description

Cyclopentanecarbonyl Chloride, 2-Methyl-5-(1-Methylethylidene)-, (1S-Trans)- (9Ci) is a high-purity, stereochemically defined organic intermediate of significant value in advanced chemical synthesis. Its rigid bicyclic structure and reactive acid chloride functional group make it a versatile building block for constructing complex molecular architectures. This compound is primarily sought by R&D and production chemists in the pharmaceutical and agrochemical industries for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: Key chiral synthon for the synthesis of proprietary drug candidates, particularly in central nervous system (CNS) and anti-inflammatory therapeutic areas.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its specific stereochemistry can influence biological activity.
• Advanced Material Precursor: Serves as a monomer or cross-linking agent in the development of specialty polymers with tailored thermal or mechanical properties.
• Fine Chemical Manufacturing: Employed in multi-step organic synthesis to introduce the cyclopentanecarbonyl moiety into complex molecules for fragrances or other high-value chemicals.
• Academic & Contract Research: A valuable reagent for methodological studies in asymmetric synthesis and catalysis within university and CRO laboratories.

Basic Information

Item	Detail
Product Name	Cyclopentanecarbonyl Chloride, 2-Methyl-5-(1-Methylethylidene)-, (1S-Trans)- (9Ci)
CAS No.	61900-01-4
Molecular Formula	C10H15ClO
Molecular Weight	186.68 g/mol
Synonyms	(1S-trans)-2-Methyl-5-(1-methylethylidene)cyclopentanecarbonyl chloride; (1S,2R)-2-Methyl-5-(prop-1-en-2-yl)cyclopentane-1-carbonyl chloride; 2-Methyl-5-isopropylidenecyclopentanecarbonyl chloride, (1S,2R)-; Bicyclo[3.1.0]hexane-2-carbonyl chloride, 6,6-dimethyl-, (1S,5R)-; (-)-trans-2-Methyl-5-(1-methylethylidene)cyclopentanecarbonyl chloride
EINECS	Contact for details

Quality Control

Our Cyclopentanecarbonyl Chloride, 2-Methyl-5-(1-Methylethylidene)-, (1S-Trans)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity assessment by HPLC, to ensure it meets exacting research and production-grade specifications. A detailed Certificate of Analysis (COA) confirming identity, purity, and enantiomeric excess is provided with every shipment.

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). This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to maintain stability and prevent hydrolysis. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Chiral Purity (Enantiomeric Excess)	≥ 98.0% ee
Water Content (Karl Fischer)	≤ 0.5%

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