Description

5,6-Dihydro-2H-Pyran-2-One is a versatile lactone and a key heterocyclic building block in organic synthesis. This compound matters for its role as a crucial intermediate in the production of pharmaceuticals, agrochemicals, and fine chemicals, enabling complex molecular architectures. Industries that need it include pharmaceutical R&D for active ingredient synthesis, agrochemical manufacturers for novel crop protection agents, and specialty chemical producers developing advanced materials and fragrances.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those with complex heterocyclic structures.
• Agrochemical Synthesis: Used in the development and production of advanced herbicides, fungicides, and insecticides.
• Fine Chemical Production: Serves as a building block for creating specialty chemicals, including flavors, fragrances, and performance materials.
• Organic Synthesis Reagent: Employed in academic and industrial research laboratories for constructing complex organic molecules, including natural product analogs.
• Polymer Chemistry: Acts as a monomer or modifying agent in the synthesis of specialized polymers and resins.

Basic Information

Product Name	5,6-Dihydro-2H-Pyran-2-One
CAS No.	3393-45-1
Molecular Formula	C5H6O2
Molecular Weight	98.10 g/mol
Synonyms	δ-Valerolactone; 5,6-Dihydro-2H-pyran-2-one; 2H-Pyran-2-one, 5,6-dihydro-; 3,4-Dihydro-2H-pyran-6-one; Tetrahydro-2H-pyran-2-one; 5,6-Dihydro-2-pyrone; δ-Angelica lactone (isomer)
EINECS	222-234-8

Quality Control

Our 5,6-Dihydro-2H-Pyran-2-One is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of our global B2B clients in regulated industries. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
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.