Description

(+)-4,4',7,7'-Tetramethoxy-5,5'-Dimethyl-8,8'-Bi(2H-1-Benzopyran)-2,2'-Dione is a high-purity, optically active benzopyran derivative with a complex, symmetrical molecular architecture. This compound serves as a critical advanced intermediate and chiral building block for the synthesis of sophisticated organic molecules, where its specific stereochemistry and functional groups are essential. It is primarily required by pharmaceutical R&D and fine chemical synthesis laboratories focused on developing novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key chiral precursor in the research and development of novel drug candidates, particularly in therapeutic areas requiring complex molecular scaffolds.
• Asymmetric Synthesis: Utilized as a sophisticated building block in stereoselective organic synthesis to construct molecules with defined three-dimensional structures.
• Ligand and Catalyst Development: Serves as a core structure for designing novel chiral ligands or organocatalysts used in enantioselective transformations.
• Material Science Research: Investigated for potential application in the development of advanced organic electronic materials or photoresponsive polymers due to its extended conjugated system.
• Academic & Industrial R&D: Employed in chemical research for studying structure-activity relationships (SAR) and developing new synthetic methodologies.

Basic Information

Product Name	(+)-4,4',7,7'-Tetramethoxy-5,5'-Dimethyl-8,8'-Bi(2H-1-Benzopyran)-2,2'-Dione
CAS No.	27909-08-6
Molecular Formula	C26H26O10
Molecular Weight	498.48 g/mol
Synonyms	(+)-Tetramethoxydimethylbibenzopyrandione; (R)-4,4',7,7'-Tetramethoxy-5,5'-dimethyl-8,8'-bibenzopyran-2,2'-dione; Dextrorotatory bibenzopyran derivative; CAS 27909-08-6; 1-Benzopyran-2,2'-dione, 8,8'-bi-5,6,7,8-tetrahydro-4,4',7,7'-tetramethoxy-5,5'-dimethyl-, (8R,8'R)-; (8R,8'R)-4,4',7,7'-Tetramethoxy-5,5'-dimethyl-5,6,7,8-tetrahydro-8,8'-bi[1]benzopyran-2,2'-dione
EINECS	Contact for details

Quality Control

Our production of (+)-4,4',7,7'-Tetramethoxy-5,5'-Dimethyl-8,8'-Bi(2H-1-Benzopyran)-2,2'-Dione adheres to stringent quality protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is characterized using advanced analytical techniques including HPLC, chiral analysis, NMR, and mass spectrometry to confirm identity, enantiomeric excess, and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is 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). The compound may be light-sensitive; prolonged exposure to light should be avoided. Keep the container tightly sealed in a dry environment to maintain stability.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%

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