Description

2-Cyclopenten-1-One,4-Methoxy-,(S)-(9Ci) CAS NO 59995-51-6 is a chiral, optically active cyclopentenone derivative characterized by its methoxy substituent. This compound serves as a valuable chiral building block and synthetic intermediate in advanced organic synthesis, enabling the construction of complex molecular architectures with high stereochemical fidelity. It is primarily utilized by research and development chemists in the pharmaceutical, agrochemical, and fine chemical industries for applications requiring precise stereocontrol.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of prostaglandins, steroids, and other bioactive molecules.
• Agrochemical Synthesis: Used in the research and production of chiral pesticides, herbicides, and plant growth regulators where specific stereochemistry is crucial for activity.
• Fine Chemical Production: Employed as a precursor in the manufacture of specialty chemicals, flavors, fragrances, and advanced materials.
• Academic & Industrial Research: A versatile reagent in methodological development for asymmetric synthesis, cycloaddition reactions, and natural product total synthesis.
• Ligand and Catalyst Development: Serves as a starting material for the preparation of chiral ligands and organocatalysts used in enantioselective transformations.

Basic Information

Item	Detail
Product Name	2-Cyclopenten-1-One,4-Methoxy-,(S)-(9Ci)
CAS No.	59995-51-6
Molecular Formula	C6H8O2
Molecular Weight	112.13 g/mol
Synonyms	(S)-4-Methoxy-2-cyclopenten-1-one; (S)-4-Methoxycyclopent-2-en-1-one; 4-Methoxy-2-cyclopenten-1-one, (S)-; 2-Cyclopenten-1-one, 4-methoxy-, (S)-; (S)-4-Methoxy-2-cyclopentenone; (5S)-4-Methoxycyclopent-2-en-1-one
EINECS	Contact for details

Quality Control

Our 2-Cyclopenten-1-One,4-Methoxy-,(S)-(9Ci) is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for research and synthesis. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This material is light-sensitive (store away from light). Keep the container tightly sealed to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.