Description

4H-Pyran-4-One, 2-Acetyl-2,3-Dihydro-2-Methyl-, (2S)- (9Ci) is a chiral, high-purity chemical building block of significant interest in advanced organic synthesis. This compound matters as a versatile intermediate for constructing complex molecular architectures, particularly in the development of active pharmaceutical ingredients (APIs) and specialty fine chemicals. It is needed by research chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries seeking to introduce specific stereochemistry and functional groups into their target molecules.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel therapeutic agents, including potential enzyme inhibitors and receptor modulators.
• Agrochemical Synthesis: Used in the creation of advanced, stereoselective pesticides and herbicides where specific chirality can influence biological activity.
• Fine Chemical Production: Serves as a precursor in the manufacture of complex flavors, fragrances, and other high-value specialty chemicals.
• Academic & Industrial Research: A valuable tool for methodological development in asymmetric synthesis and catalysis studies.
• Material Science Precursor: Potential use in the synthesis of organic ligands for catalysts or functional organic materials.

Basic Information

Product Name	4H-Pyran-4-One, 2-Acetyl-2,3-Dihydro-2-Methyl-, (2S)- (9Ci)
CAS No.	200421-48-3
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	(2S)-2-Acetyl-2-methyl-2,3-dihydro-4H-pyran-4-one; (S)-2-Acetyl-2-methyl-2,3-dihydro-4H-pyran-4-one; 2-Acetyl-2,3-dihydro-2-methyl-4H-pyran-4-one, (2S)-; (S)-Dehydroacetic acid lactone derivative; Chiral dihydropyranone; (S)-2-Methyl-2-acetyl-2,3-dihydro-4H-pyran-4-one
EINECS	Contact for details

Quality Control

Our 4H-Pyran-4-One, 2-Acetyl-2,3-Dihydro-2-Methyl-, (2S)- (9Ci) is produced 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 research and process chemistry. Certificates of Analysis (COA) detailing identity, purity, and chiral excess are available for every shipment upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% ee
Melting Point	Contact for details
Loss on Drying	≤ 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.