Description

2H-1-Benzopyran,2-Ethoxy-3,4-Dihydro-4-Methoxy-,(2R,4R)-Rel-(9Ci) is a high-purity, stereochemically defined chiral intermediate of significant interest in advanced organic synthesis. This compound matters for its role as a critical building block in the development of complex, biologically active molecules, where its specific stereochemistry is essential for desired activity and selectivity. Pharmaceutical R&D laboratories and fine chemical manufacturers need this material for the synthesis of potential drug candidates, particularly in areas requiring precise molecular architecture.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel active pharmaceutical ingredients (APIs), especially in therapeutic areas targeting specific biological pathways.
• Asymmetric Synthesis: Utilized in stereoselective reactions to construct complex molecular frameworks found in natural products and medicinal compounds.
• Chemical Research & Development: Serves as a valuable reference standard and starting material in academic and industrial laboratories exploring new synthetic methodologies.
• Fine Chemical Production: Employed in the multi-step synthesis of specialty chemicals where control over stereochemistry is paramount for final product performance.

Basic Information

Product Name	2H-1-Benzopyran,2-Ethoxy-3,4-Dihydro-4-Methoxy-,(2R,4R)-Rel-(9Ci)
CAS No.	431887-93-3
Molecular Formula	C12H16O3
Molecular Weight	208.25 g/mol
Synonyms	(2R,4R)-2-Ethoxy-4-methoxy-3,4-dihydro-2H-1-benzopyran; (2R,4R)-rel-2-Ethoxy-4-methoxy-3,4-dihydro-2H-chromene; 2-Ethoxy-4-methoxy-3,4-dihydro-2H-chromene (rel-(2R,4R)-form); 2H-1-Benzopyran, 2-ethoxy-3,4-dihydro-4-methoxy-, (2R,4R)-rel-; 431887-93-3; Chromane derivative, chiral.
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We provide comprehensive analytical data to support your R&D and production needs. Certificates of Analysis (COA) detailing purity, chiral purity, and impurity profiles are available upon request. Our quality systems are designed to meet the stringent requirements of pharmaceutical and fine chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage under inert atmosphere, please contact us for specific recommendations.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
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.