Description

4-[(R)-4,8-Dihydro-5-Methoxy-8,8-Dimethyl-2H,3H-Benzo[1,2-B:5,4-B']Dipyran-3-Yl]-1,3-Benzenediol is a high-purity, optically active benzodipyran derivative of significant interest in advanced organic synthesis. Its complex chiral structure makes it a valuable intermediate for the development of novel pharmaceutical compounds and fine chemicals. This product is essential for research and development laboratories, as well as production facilities, in the pharmaceutical, agrochemical, and specialty chemical industries seeking to incorporate sophisticated molecular frameworks.

Application

• Pharmaceutical Intermediate: A key chiral building block for the synthesis of potential active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring complex, nature-inspired molecular architectures.
• Fine Chemical Synthesis: Used in the research and development of novel dyes, pigments, and advanced organic materials due to its fused polycyclic structure.
• Agrochemical Research: Serves as a precursor in the development of new-generation plant protection agents and growth regulators.
• Academic & Industrial R&D: A valuable compound for methodological studies in asymmetric synthesis, total synthesis, and catalysis.
• Reference Standard: Can be supplied as a high-purity analytical standard for quality control and method development in analytical laboratories.

Basic Information

Product Name	4-[(R)-4,8-Dihydro-5-Methoxy-8,8-Dimethyl-2H,3H-Benzo[1,2-B:5,4-B']Dipyran-3-Yl]-1,3-Benzenediol
CAS No.	53734-74-0
Molecular Formula	C21H22O5
Molecular Weight	354.40 g/mol
Synonyms	(R)-4-(4,8-Dihydro-5-methoxy-8,8-dimethyl-2H,3H-benzo[1,2-b:5,4-b']dipyran-3-yl)benzene-1,3-diol; 3,5-Dihydroxy-4-[(3R)-5-methoxy-2,2-dimethyl-3,4-dihydro-2H,8H-benzo[1,2-b:3,4-b']dipyran-3-yl]phenol; 4-[(3R)-5-Methoxy-2,2-dimethyl-3,4-dihydro-2H,8H-benzo[1,2-b:3,4-b']dipyran-3-yl]resorcinol; (R)-4-(5-Methoxy-8,8-dimethyl-4,8-dihydro-2H,3H-benzo[1,2-b:5,4-b']dipyran-3-yl)benzene-1,3-diol; CAS 53734-74-0
EINECS	Contact for details

Quality Control

Our 4-[(R)-4,8-Dihydro-5-Methoxy-8,8-Dimethyl-2H,3H-Benzo[1,2-B:5,4-B']Dipyran-3-Yl]-1,3-Benzenediol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for research and production. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and compliance with customer specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, long-term storage under an inert atmosphere (e.g., nitrogen or argon) is recommended for optimal stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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