Description

(3As)-3,3Aα,5,5Aβ,6,7,8,8A-Octahydro-8Aα-Hydroxy-10,10-Dimethyl-6α,8Bα-Ethano-8Bh-Cyclopenta[De]-2-Benzopyran-1,4-Dione CAS NO 91682-93-8 is a high-purity, complex organic compound belonging to the class of functionalized cyclopenta-fused benzopyrandiones. This compound serves as a critical advanced intermediate in the synthesis of novel pharmaceutical agents and fine chemicals, where its unique stereochemistry and functional groups enable precise molecular construction. It is primarily required by research institutions, pharmaceutical R&D laboratories, and specialty chemical manufacturers engaged in developing new therapeutic molecules and high-value chemical entities.

Application

• Pharmaceutical Intermediate: Key building block in the research and development of novel drug candidates, particularly for complex small-molecule therapeutics.
• Organic Synthesis Research: Used in academic and industrial laboratories for studying cycloaddition reactions, stereoselective synthesis, and the construction of polycyclic frameworks.
• Fine Chemical Production: Serves as a precursor for the manufacture of specialty chemicals with specific optical or biological activities.
• Agrochemical Intermediate: Potential use in the synthesis of advanced, high-performance active ingredients for crop protection.
• Material Science Research: Investigated as a monomer or precursor for creating novel polymers with specialized thermal or optical properties.

Basic Information

Product Name	(3As)-3,3Aα,5,5Aβ,6,7,8,8A-Octahydro-8Aα-Hydroxy-10,10-Dimethyl-6α,8Bα-Ethano-8Bh-Cyclopenta[De]-2-Benzopyran-1,4-Dione
CAS No.	91682-93-8
Molecular Formula	C₁₇H₂₂O₄
Molecular Weight	290.35 g/mol
Synonyms	8Aα-Hydroxy-10,10-dimethyl-6α,8bα-ethano-8bh-cyclopenta[de]-2-benzopyran-1,4-dione; (3aS,5R,6S,8aR,8bR)-8a-Hydroxy-3a,4,5,6,7,8,8a,8b-octahydro-5,6-methano-3H-cyclopenta[de]isochromene-1,9-dione; 91682-93-8; Cyclopenta[de]-2-benzopyran-1,4-dione derivative; 5,6-Methano-3H-cyclopenta[de]isochromene-1,9-dione octahydro derivative.
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems. Every batch is characterized and purified using advanced chromatographic techniques to ensure high chemical and isomeric purity, which is critical for sensitive downstream synthesis. Comprehensive analytical control, including HPLC, GC, NMR, and MS, is employed. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming identity, purity, and specific impurity profiles to support your R&D and scale-up activities.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The compound may be hygroscopic; therefore, containers should be kept tightly sealed in a dry environment. For long-term storage, consider inert gas purging.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Specific Rotation	Contact for details

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