Description

(S)-3-Ethyltetrahydro-2H-pyran-2-one is a chiral lactone building block of significant value in advanced organic synthesis. Its defined stereochemistry and functionalized pyranone structure make it a versatile precursor for creating complex, optically active molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and fine chemical industries, particularly for developing active pharmaceutical ingredients (APIs) and specialty agrochemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of novel drug candidates, especially in central nervous system (CNS) and antiviral research.
• Agrochemical Synthesis: Used in the production of enantiomerically pure pesticides and herbicides for enhanced efficacy and environmental profile.
• Flavor & Fragrance Industry: Serves as a precursor for lactone-based aroma chemicals, contributing to creamy, coconut, or fruity notes.
• Asymmetric Catalysis: Employed as a substrate or ligand precursor in the development of new catalytic systems for stereoselective reactions.
• Material Science: A monomer or modifying agent for synthesizing specialized polymers with unique thermal or optical properties.
• Academic & R&D: A valuable tool for methodological studies in organic chemistry and total synthesis of natural products.

Basic Information

Product Name	(S)-3-Ethyltetrahydro-2H-pyran-2-one
CAS No.	103957-83-1
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	(S)-3-Ethyl-δ-valerolactone; (S)-3-Ethyltetrahydro-2H-pyran-2-one; (S)-3-Ethyl-5,6-dihydro-2H-pyran-2-one; (S)-3-Ethyl-5,6-dihydro-2-pyrone; (S)-3-Ethyl-2-oxotetrahydro-2H-pyran; (S)-3-Ethyltetrahydropyran-2-one; (S)-3-Ethyl-δ-hexalactone; (S)-3-Ethyl-2-oxo-tetrahydropyran
EINECS	Contact for details

Quality Control

Our (S)-3-Ethyltetrahydro-2H-pyran-2-one is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including chiral purity (enantiomeric excess) verification via chiral HPLC or GC. A Certificate of Analysis (COA) detailing identity, assay, impurity profile, and specific rotation is available for every batch upon request, supporting your quality assurance and regulatory documentation needs.

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). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Chiral Purity (ee)	≥ 98.0%
Specific Rotation [α]	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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