Description

3,4-Dihydro-2H-Pyran is a versatile heterocyclic organic compound and a key building block in synthetic organic chemistry. Its primary value lies in its role as a protective group for alcohols and as a precursor for synthesizing more complex molecules like tetrahydropyran derivatives. This chemical is essential for research and production in the pharmaceutical, agrochemical, and fine chemical industries, where it is used to create active ingredients and advanced intermediates.

Application

• Pharmaceutical Intermediates: A crucial precursor in the synthesis of various active pharmaceutical ingredients (APIs) and drug candidates.
• Protecting Group Chemistry: Widely used to protect hydroxyl groups in multi-step organic syntheses, enabling selective reactions.
• Agrochemical Synthesis: Serves as a key intermediate in the production of certain herbicides, fungicides, and insecticides.
• Fine Chemical Manufacturing: Employed in the creation of flavors, fragrances, and other specialty chemicals.
• Polymer Chemistry: Acts as a monomer or modifier in the synthesis of specialized polymers and resins.
• Academic & Industrial Research: A fundamental reagent for methodological development and exploratory chemistry in R&D laboratories.

Basic Information

Product Name	3,4-Dihydro-2H-Pyran
CAS No.	110-87-2
Molecular Formula	C5H8O
Molecular Weight	84.12 g/mol
Synonyms	2,3-Dihydro-4H-pyran; 3,4-Dihydro-2H-pyran; 2,3-Dihydropyran; DHP; 4H-Pyran, 3,4-dihydro-; 2H-Pyran, 3,4-dihydro-; 3,4-Dihydro-2H-pyran, stabilized; NSC 66466
EINECS	203-810-8

Quality Control

Our 3,4-Dihydro-2H-Pyran is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, keep containers tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.439 - 1.443
Density (20°C)	0.920 - 0.930 g/mL

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