Description

1H,6H-Pyrano[3,4-C]Pyran-1,6-Dione,5-Ethyl-3,4,5,8-Tetrahydro-5-Hydroxy-,(5R)-(9Ci) is a high-purity, chiral heterocyclic compound that serves as a critical advanced intermediate for complex organic synthesis. Its defined stereochemistry and functionalized pyranopyrandione core make it invaluable for constructing sophisticated molecular architectures with high precision. This compound is primarily sought by research institutions and pharmaceutical developers for applications in medicinal chemistry, including the synthesis of novel active pharmaceutical ingredients (APIs) and complex natural product analogs.

Application

• Pharmaceutical Intermediate: A key chiral building block for the research and development of new therapeutic agents and active pharmaceutical ingredients (APIs).
• Medicinal Chemistry Research: Used in structure-activity relationship (SAR) studies and the synthesis of complex, biologically active molecules.
• Asymmetric Synthesis: Employed as a precursor or scaffold in catalytic asymmetric reactions due to its defined (5R) stereocenter.
• Natural Product Synthesis: Serves as a synthetic intermediate for constructing complex natural products containing fused pyran ring systems.
• Chemical Biology Probes: Utilized in the development of specialized molecular probes for studying biological pathways and enzyme functions.
• High-Value Fine Chemical Production: Integrated into multi-step synthesis processes for producing specialty chemicals with specific optical activity.

Basic Information

Product Name	1H,6H-Pyrano[3,4-C]Pyran-1,6-Dione,5-Ethyl-3,4,5,8-Tetrahydro-5-Hydroxy-,(5R)-(9Ci)
CAS No.	639858-14-3
Molecular Formula	C10H12O5
Molecular Weight	212.20 g/mol
Synonyms	(5R)-5-Ethyl-3,4,5,8-tetrahydro-5-hydroxy-1H,6H-pyrano[3,4-c]pyran-1,6-dione; 5-Ethyl-3,4,5,8-tetrahydro-5-hydroxy-1H,6H-pyrano[3,4-c]pyran-1,6-dione, (5R)-; (5R)-5-Ethyl-5-hydroxy-3,4,5,8-tetrahydro-1H,6H-pyrano[3,4-c]pyran-1,6-dione; 1H,6H-Pyrano[3,4-c]pyran-1,6-dione, 5-ethyl-3,4,5,8-tetrahydro-5-hydroxy-, (5R)-; CAS 639858-14-3; (R)-5-Ethyl-5-hydroxy-3,4,5,8-tetrahydro-1H,6H-pyrano[3,4-c]pyran-1,6-dione
EINECS	Contact for details

Quality Control

Our 1H,6H-Pyrano[3,4-C]Pyran-1,6-Dione,5-Ethyl-3,4,5,8-Tetrahydro-5-Hydroxy-,(5R)-(9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for pharmaceutical research and development. Certificates of Analysis (COA) detailing identity, purity, and chiral excess are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
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.