Description

3,6-Dihydro-2H-Pyran is a versatile heterocyclic organic compound and a key intermediate in organic synthesis. This chemical matters for its role as a crucial building block in the production of pharmaceuticals, agrochemicals, and fine chemicals. Industries such as pharmaceutical R&D, flavor & fragrance manufacturing, and specialty chemical synthesis need this high-purity intermediate for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of active pharmaceutical ingredients (APIs), particularly for antiviral and cardiovascular drugs.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Flavor & Fragrance Industry: Serves as a precursor for creating specific lactone and cyclic ether notes in perfumes and food flavorings.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers and resins.
• Organic Synthesis Building Block: Utilized in Diels-Alder reactions and other cycloadditions to form more complex oxygen-containing heterocycles.
• Research & Development: Employed in academic and industrial labs for method development and novel compound discovery.

Basic Information

Product Name	3,6-Dihydro-2H-Pyran
CAS No.	3174-74-1
Molecular Formula	C5H8O
Molecular Weight	84.12 g/mol
Synonyms	2,3-Dihydro-4H-pyran; 3,6-Dihydro-2H-pyran; 2,3-Dihydropyran; DHP; 4H-Pyran, 3,6-dihydro-; 3,6-Dihydro-2H-pyran; 2,3-Dihydro-4H-pyran; NSC 5185
EINECS	221-660-1

Quality Control

Our 3,6-Dihydro-2H-Pyran is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including GC and NMR analysis, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.440 - 1.444
Density (20°C)	0.925 - 0.935 g/mL

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