Description

1-Cyclopentene-1-Carboxaldehyde, 3-Methyl-, (S)- (9Ci) is a high-value, chiral aldehyde building block characterized by its cyclopentene backbone and stereogenic center. This compound matters as a versatile and sophisticated intermediate for the synthesis of complex molecules, particularly in the pharmaceutical and agrochemical sectors where stereochemistry is critical for biological activity. It is needed by R&D chemists and process development scientists working on active pharmaceutical ingredients (APIs), fine chemicals, and advanced material precursors. The compound is supplied with a guaranteed Certificate of Analysis to ensure batch-to-batch consistency and purity for demanding synthetic applications.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel therapeutic agents, including antiviral and anti-inflammatory drugs.
• Agrochemical Synthesis: Used in the production of advanced, stereoselective pesticides and herbicides.
• Fine Chemical Production: Serves as a building block for fragrances, flavors, and other specialty chemicals requiring specific stereochemistry.
• Academic & Industrial Research: A valuable reagent in methodological chemistry development, such as asymmetric synthesis and catalysis studies.
• Material Science: Potential precursor for designing novel polymers or liquid crystals with specific optical properties.

Basic Information

Product Name	1-Cyclopentene-1-Carboxaldehyde, 3-Methyl-, (S)- (9Ci)
CAS No.	114818-65-4
Molecular Formula	C7H10O
Molecular Weight	110.15 g/mol
Synonyms	(S)-3-Methyl-1-cyclopentene-1-carboxaldehyde; (S)-3-Methylcyclopent-1-ene-1-carbaldehyde; 3-Methyl-1-cyclopentene-1-carboxaldehyde, (S)-; 1-Cyclopentene-1-carboxaldehyde, 3-methyl-, (S)-; (S)-3-Methyl-1-cyclopentenecarboxaldehyde
EINECS	Contact for details

Quality Control

Our 1-Cyclopentene-1-Carboxaldehyde, 3-Methyl-, (S)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure it meets the high standards required for advanced synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to guarantee traceability and compliance with your research or production specifications.

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 place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, and open flame.

Specification

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

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