Description

2-Cyclopentene-1-Acetaldehyde, 2-Formyl-3-Methyl-, (S)- (9Ci) is a high-value, chiral building block characterized by its reactive aldehyde and formyl groups on a cyclopentene scaffold. This compound matters as a versatile intermediate for the synthesis of complex, optically active molecules, enabling the creation of novel compounds with specific stereochemistry. It is primarily needed by research chemists and process development scientists in the pharmaceutical and agrochemical industries for applications in asymmetric synthesis and medicinal chemistry.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring specific stereochemistry.
• Asymmetric Synthesis: Utilized in the construction of complex, enantiomerically pure natural products and bioactive molecules due to its defined (S)-configuration.
• Agrochemical Research: Serves as a building block for developing new chiral pesticides, herbicides, or plant growth regulators with enhanced efficacy and selectivity.
• Fine Chemical Synthesis: Employed in the production of specialty chemicals, flavors, and fragrances where precise molecular architecture is critical.
• Material Science Precursor: Potential use in the synthesis of advanced organic materials and ligands for catalytic systems.

Basic Information

Item	Details
Product Name	2-Cyclopentene-1-Acetaldehyde, 2-Formyl-3-Methyl-, (S)- (9Ci)
CAS No.	203508-76-3
Molecular Formula	C9H12O2
Molecular Weight	152.19 g/mol
Synonyms	(S)-2-Formyl-3-methyl-2-cyclopentene-1-acetaldehyde; (S)-2-(Formylmethyl)-3-methyl-2-cyclopenten-1-carboxaldehyde; 2-Cyclopentene-1-acetaldehyde, 2-formyl-3-methyl-, (S)-; (S)-3-Methyl-2-formyl-2-cyclopentene-1-acetaldehyde; (S)-2-Methyl-3-(2-oxoethyl)cyclopent-2-ene-1-carbaldehyde
EINECS	Contact for details

Quality Control

Our 2-Cyclopentene-1-Acetaldehyde, 2-Formyl-3-Methyl-, (S)- (9Ci) is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including chiral purity analysis, to ensure it meets the exacting standards required for research and process chemistry. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at controlled room temperature (15-25°C) to minimize oxidation. This material is easily oxidized; prolonged exposure to air should be avoided. Keep container tightly sealed in a cool, dry, and well-ventilated place.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Enantiomeric 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.