Description

1H-2-Benzopyran-4,5-Diol, 3,4-Dihydro-8-Methoxy-1,3-Dimethyl-, (1R,3S,4S)-Rel- (9Ci) is a high-purity, stereochemically defined benzopyran derivative. This compound is valued as a critical chiral intermediate and building block in advanced organic synthesis, particularly for pharmaceuticals and fine chemicals. It is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries who require precise molecular architecture for creating novel active compounds.

Application

• Pharmaceutical Intermediate: Key chiral building block for the synthesis of novel therapeutic agents, particularly in central nervous system (CNS) and cardiovascular drug research.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides where specific stereochemistry influences biological activity.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and other complex organic molecules requiring the benzopyran core structure.
• Academic & Industrial R&D: A valuable reference standard and starting material for methodological studies in asymmetric synthesis and catalysis.
• Material Science Research: Potential monomer or precursor for developing specialty polymers with unique optical or electronic properties.

Basic Information

Item	Details
Product Name	1H-2-Benzopyran-4,5-Diol, 3,4-Dihydro-8-Methoxy-1,3-Dimethyl-, (1R,3S,4S)-Rel- (9Ci)
CAS No.	569652-85-3
Molecular Formula	C12H16O4
Molecular Weight	224.25 g/mol
Synonyms	rel-(1R,3S,4S)-3,4-Dihydro-8-methoxy-1,3-dimethyl-1H-2-benzopyran-4,5-diol; 3,4-Dihydro-8-methoxy-1,3-dimethyl-1H-2-benzopyran-4,5-diol, (1R,3S,4S)-rel-; 569652-85-3; 1H-2-Benzopyran-4,5-diol, 3,4-dihydro-8-methoxy-1,3-dimethyl-, rel-(1R,3S,4S)-; (1R,3S,4S)-rel-3,4-Dihydro-8-methoxy-1,3-dimethyl-1H-isochromene-4,5-diol
EINECS	Contact for details

Quality Control

Our 1H-2-Benzopyran-4,5-Diol, 3,4-Dihydro-8-Methoxy-1,3-Dimethyl-, (1R,3S,4S)-Rel- (9Ci) is produced under strict quality management systems. Every batch undergoes rigorous analytical testing including HPLC, NMR, and chiral purity analysis to ensure identity, strength, quality, and purity. Certificates of Analysis (COA) documenting all critical parameters are available upon request, supporting compliance with cGMP and ICH guidelines for advanced intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Chiral Purity (Chiral HPLC)	≥ 99.0% ee
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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