Description

4H-1-Benzopyran-4-Ol, (4R)- (9Ci) CAS NO 433228-87-6 is a high-purity chiral chroman derivative, a key building block in advanced organic synthesis. Its defined stereochemistry and benzopyran core structure make it a critical intermediate for developing optically active pharmaceuticals and fine chemicals. This compound is primarily sought by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the synthesis of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial chiral synthon for the research and development of new drug candidates, particularly in central nervous system (CNS) and cardiovascular therapeutic areas.
• Agrochemical Synthesis: Used in the production of advanced, stereoselective pesticides and herbicides where specific chirality enhances biological activity.
• Fine Chemical Production: Serves as a building block for synthesizing complex flavors, fragrances, and functional organic materials.
• Academic & R&D: Employed in university and corporate research laboratories for methodological studies in asymmetric synthesis and heterocyclic chemistry.
• Material Science Precursor: Potential use in the development of organic electronic materials and photoresponsive polymers due to its chromophore structure.

Basic Information

Product Name	4H-1-Benzopyran-4-Ol, (4R)- (9Ci)
CAS No.	433228-87-6
Molecular Formula	C9H10O2
Molecular Weight	150.17 g/mol
Synonyms	(4R)-4H-Chromen-4-ol; (R)-4-Hydroxy-4H-chromene; (R)-4H-1-Benzopyran-4-ol; (R)-Chromen-4-ol; (R)-4-Hydroxychromene; (4R)-4-Hydroxy-4H-chromene; (R)-4-Chromanol; Light-sensitive chroman derivative
EINECS	Contact for details

Quality Control

Our 4H-1-Benzopyran-4-Ol, (4R)- (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity assessment by HPLC, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to guarantee traceability and consistency for your critical processes.

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). This compound is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); therefore, containers should be kept sealed under an inert atmosphere if specified for optimal long-term stability.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (Chiral HPLC)	≥ 98.0% 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.