Description

1H-2-Benzopyran, 3,4-Dihydro-3-Phenyl-, (R)- is a high-purity chiral chromane derivative, specifically the (R)-enantiomer, identified by CAS NO 70960-11-1. This compound serves as a critical chiral building block and intermediate in advanced organic synthesis, offering precise stereochemical control for complex molecule construction. It is essential for researchers and manufacturers in the pharmaceutical and fine chemical industries developing active pharmaceutical ingredients (APIs), agrochemicals, and specialty materials.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the research and development of novel therapeutic agents, particularly in central nervous system (CNS) and cardiovascular drug candidates.
• Asymmetric Synthesis: Utilized as a starting material or intermediate in catalytic asymmetric reactions to introduce the chromane scaffold with high enantiomeric purity.
• Agrochemical Research: Serves as a precursor in the synthesis of chiral active ingredients for crop protection products.
• Fine Chemical Production: Employed in the manufacture of advanced fragrances, flavors, and functional materials where specific stereochemistry is required.
• Academic & R&D: Used in university and institutional laboratories for methodological studies in organic chemistry and medicinal chemistry programs.
• Material Science: Potential intermediate for creating chiral dopants or monomers in advanced polymer and liquid crystal applications.

Basic Information

Product Name	1H-2-Benzopyran, 3,4-Dihydro-3-Phenyl-, (R)-
CAS No.	70960-11-1
Molecular Formula	C15H14O
Molecular Weight	210.27 g/mol
Synonyms	(R)-3-Phenyl-3,4-dihydro-2H-1-benzopyran; (R)-3-Phenylchroman; (R)-3-Phenyl-3,4-dihydro-2H-chromene; (R)-3-Phenyl-2H-chromene; (R)-3-Phenyl-3,4-dihydro-1-benzopyran; (R)-Flavan; (R)-2,3-Dihydro-3-phenyl-4H-1-benzopyran-4-one (common misnomer for related structure); (R)-3-Phenyl-2H-1-benzopyran
EINECS	Contact for details

Quality Control

Our 1H-2-Benzopyran, 3,4-Dihydro-3-Phenyl-, (R)- is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chiral purity determination by HPLC, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and enantiomeric excess are provided and available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). The compound may be light-sensitive; prolonged exposure to light should be avoided. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Enantiomeric Purity (Chiral HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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