Description

2H-Pyran-2-One, 3-Acetyl-4-Hydroxy-5-Methyl- (9Ci) is a specialized heterocyclic compound belonging to the pyranone class, identified by CAS number 337959-72-5. This chemical serves as a valuable advanced intermediate and building block in the synthesis of complex organic molecules, prized for its unique acetyl and hydroxy functional groups. It is primarily utilized by R&D chemists and process development teams in the pharmaceutical and fine chemical industries for creating novel active ingredients and functional materials.

Application

This compound is a versatile synthon with applications across several high-value research and manufacturing sectors.

• Pharmaceutical Intermediate: Key building block in the synthesis of potential drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in developing novel fungicides, herbicides, and plant growth regulators.
• Fine Chemical Synthesis: Serves as a precursor for flavors, fragrances, and specialty performance chemicals.
• Material Science: Investigated as a monomer or cross-linking agent in the development of advanced polymers.
• Academic & Industrial R&D: Employed in methodological studies and as a reference standard in analytical chemistry.

Basic Information

Product Name	2H-Pyran-2-One, 3-Acetyl-4-Hydroxy-5-Methyl- (9Ci)
CAS No.	337959-72-5
Molecular Formula	C8H8O4
Molecular Weight	168.15 g/mol
Synonyms	3-Acetyl-4-hydroxy-5-methyl-2H-pyran-2-one; 4-Hydroxy-3-acetyl-5-methyl-2H-pyran-2-one; 5-Methyl-3-acetyl-4-hydroxypyran-2-one; 3-Acetyl-4-hydroxy-5-methylpyran-2-one; 3-Acetyl-4-hydroxy-5-methyl-2-pyrone; Dehydroacetic acid methyl derivative (related).
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We employ advanced analytical techniques including HPLC, GC, and NMR to verify identity, purity, and consistency. Certificates of Analysis (COA) are available upon request, detailing batch-specific results. Our quality management system is designed to support cGMP and ISO guidelines for reliable sourcing in regulated applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its light-sensitive and easily oxidized nature, it is recommended to store this material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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