Description

3,4,4A,8A-Tetrahydro-2H,5H-Pyrano[2,3-B]Pyran CAS NO 38737-52-9 is a specialized bicyclic heterocyclic compound belonging to the pyranopyran class, serving as a valuable synthetic intermediate and building block in advanced organic chemistry. Its unique fused ring structure makes it a critical precursor for developing complex molecules in pharmaceutical research and fine chemical synthesis. This compound is essential for R&D chemists and process development scientists working in medicinal chemistry, agrochemicals, and material science.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates and active pharmaceutical ingredients (APIs), particularly in central nervous system (CNS) and anti-infective research.
• Agrochemical Synthesis: Used in the research and development of new pesticides, herbicides, and fungicides due to its complex heterocyclic scaffold.
• Material Science Research: Serves as a monomer or precursor for developing advanced polymers, resins, and specialty materials with specific optical or electronic properties.
• Academic & Industrial R&D: A valuable tool for methodological studies in organic synthesis, including cycloaddition reactions and cascade transformations.
• Flavor & Fragrance Industry: Potential intermediate for creating complex odorants and flavoring agents with unique organoleptic profiles.
• Ligand & Catalyst Development: The oxygen-rich heterocyclic structure can be functionalized to create novel chelating ligands for catalytic systems.

Basic Information

Product Name	3,4,4A,8A-Tetrahydro-2H,5H-Pyrano[2,3-B]Pyran
CAS No.	38737-52-9
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	2H,5H-Pyrano[2,3-b]pyran, 3,4,4a,8a-tetrahydro-; 3,4,4a,8a-Tetrahydro-2H,5H-pyrano[2,3-b]pyran; Bicyclo[3.3.1]nonane-2,6-dione, 9-oxa-; 9-Oxabicyclo[3.3.1]nonane-2,6-dione; Tetrahydro-pyrano[2,3-b]pyran; Pyrano[2,3-b]pyran, tetrahydro derivative
EINECS	Contact for details

Quality Control

Every batch of 3,4,4A,8A-Tetrahydro-2H,5H-Pyrano[2,3-B]Pyran undergoes rigorous analytical testing to ensure identity, purity, and consistency. Our quality management system is designed to meet the stringent requirements of research and development applications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (GC)	≥ 97.0%
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.