Description

Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethylidene)-, (1R-Cis)- (9Ci) is a chiral, high-purity chemical intermediate characterized by its unique bicyclic structure and aldehyde functionality. This compound is valued for its role in the synthesis of complex molecules, particularly in the pharmaceutical and fine chemical sectors where stereochemical control is critical. It serves as a key building block for researchers and manufacturers developing active pharmaceutical ingredients (APIs), agrochemicals, and advanced fragrance components.

Application

• Pharmaceutical Intermediate: A crucial chiral synthon for the synthesis of novel drug candidates, especially in therapeutic areas requiring specific stereochemistry.
• Agrochemical Synthesis: Used in the research and development of advanced pesticides and herbicides, leveraging its complex carbon skeleton.
• Fine Chemical Production: Serves as a specialized building block for creating complex flavors, fragrances, and other high-value specialty chemicals.
• Academic & Industrial Research: A valuable reagent for methodological development in organic synthesis, catalysis, and stereoselective reactions.
• Material Science Precursor: Potential use in the synthesis of specialized polymers or ligands for catalytic systems.

Basic Information

Product Name	Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethylidene)-, (1R-Cis)- (9Ci)
CAS No.	175891-78-8
Molecular Formula	C10H16O
Molecular Weight	152.23 g/mol
Synonyms	(1R,5S)-2-Methyl-5-(prop-1-en-2-yl)cyclopentane-1-carbaldehyde; (1R-cis)-2-Methyl-5-(1-methylethylidene)cyclopentanecarboxaldehyde; Bicyclo[3.3.0]octane-2-carboxaldehyde, 3-methylene-7-methyl-, (1R,2R,5S)-rel-; (1R,2R,5S)-3-Methylene-7-methylbicyclo[3.3.0]octane-2-carboxaldehyde; A chiral terpenoid aldehyde intermediate.
EINECS	Contact for details

Quality Control

Our Cyclopentanecarboxaldehyde, 2-Methyl-5-(1-Methylethylidene)-, (1R-Cis)- (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for advanced synthetic applications. A detailed Certificate of Analysis (COA) providing specifications for identity, purity, and enantiomeric excess is supplied 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 material is easily oxidized and should be handled under an inert atmosphere for long-term storage. Keep away from heat, sparks, and open flame.

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.