Description

(7As)-4,7A-Dimethyl-5,6,7,7A-Tetrahydroindan-1,5-Dione CAS NO 28255-09-6 is a high-purity, specialized bicyclic diketone compound of significant interest in advanced organic synthesis. This molecule serves as a versatile and critical chiral building block for the construction of complex, biologically active structures. It is essential for research and development chemists in the pharmaceutical and agrochemical industries who require precise, high-quality intermediates for creating novel active ingredients.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of novel therapeutic agents, particularly for central nervous system (CNS) and anti-inflammatory targets.
• Agrochemical Synthesis: Used in the production of advanced, high-performance pesticides and herbicides, where its specific stereochemistry contributes to biological activity.
• Fine Chemical Production: Employed as a precursor in the synthesis of complex fragrances, flavors, and other specialty chemicals requiring a defined bicyclic framework.
• Asymmetric Catalysis Research: Valuable substrate for developing and testing new chiral catalysts and methodologies in academic and industrial R&D settings.
• Material Science: Potential building block for novel organic polymers and advanced materials with specific optical or electronic properties.

Basic Information

Product Name	(7As)-4,7A-Dimethyl-5,6,7,7A-Tetrahydroindan-1,5-Dione
CAS No.	28255-09-6
Molecular Formula	C11H14O2
Molecular Weight	178.23 g/mol
Synonyms	4,7a-Dimethyl-5,6,7,7a-tetrahydro-1H-indene-1,5(4H)-dione; (7aS)-4,7a-Dimethyl-5,6,7,7a-tetrahydroindan-1,5-dione; 1,5(4H)-Indenedione, 5,6,7,7a-tetrahydro-4,7a-dimethyl-; (7aS)-4,7a-Dimethyl-2,3,5,6,7,7a-hexahydro-1H-indene-1,5-dione; Tetrahydroindandione derivative; Chiral bicyclic diketone intermediate.
EINECS	Contact for details

Quality Control

Our (7As)-4,7A-Dimethyl-5,6,7,7A-Tetrahydroindan-1,5-Dione is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis by HPLC, to ensure high chemical and isomeric purity suitable for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment.

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 strong oxidizing agents, strong bases, and heat sources.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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