Description

3-Methyl-2-Butenoic Acid (9R,10R)-10-Acetoxy-9,10-Dihydro-8,8-Dimethyl-2-Oxo-2H,8H-Benzo[1,2-B:3,4-B']Dipyran-9-Yl Ester is a high-purity, complex organic ester with a defined stereochemistry, making it a valuable chiral building block for advanced chemical synthesis. This compound matters for its role in the research and development of novel active pharmaceutical ingredients (APIs) and fine chemicals, where precise molecular architecture is critical. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to create or modify complex molecular structures.

Application

• Pharmaceutical Intermediate: Serves as a key chiral synthon in the research and synthesis of novel drug candidates and active pharmaceutical ingredients (APIs).
• Agrochemical Research: Used in the development of advanced pesticides and herbicides where specific stereochemistry can influence biological activity.
• Fine Chemical Synthesis: Acts as a specialized building block for creating complex fragrance molecules, flavors, and other high-value specialty chemicals.
• Academic & Industrial R&D: Employed in chemical research laboratories for methodological studies in asymmetric synthesis and natural product chemistry.
• Process Chemistry Development: Utilized for scaling up synthetic routes and optimizing manufacturing processes for complex organic molecules.

Basic Information

Item	Detail
Product Name	3-Methyl-2-Butenoic Acid (9R,10R)-10-Acetoxy-9,10-Dihydro-8,8-Dimethyl-2-Oxo-2H,8H-Benzo[1,2-B:3,4-B']Dipyran-9-Yl Ester
CAS No.	477-33-8
Molecular Formula	C21H24O6
Molecular Weight	372.41 g/mol
Synonyms	3,3-Dimethylacrylic Acid (9R,10R)-10-Acetoxy-9,10-Dihydro-8,8-Dimethyl-2-Oxo-2H,8H-Benzo[1,2-B:3,4-B']Dipyran-9-Yl Ester; Senecioate Ester of (9R,10R)-10-Acetoxy-9,10-Dihydro-8,8-Dimethyl-2-Oxo-2H,8H-Benzo[1,2-B:3,4-B']Dipyran-9-ol; Angelate Ester Derivative; 477-33-8; (9R,10R)-9-[(3-Methylbut-2-enoyl)oxy]-10-acetyl-8,8-dimethyl-9,10-dihydro-2H,8H-pyrano[2,3-f]chromen-2-one
EINECS	Contact for details

Quality Control

Our 3-Methyl-2-Butenoic Acid (9R,10R)-10-Acetoxy-9,10-Dihydro-8,8-Dimethyl-2-Oxo-2H,8H-Benzo[1,2-B:3,4-B']Dipyran-9-Yl Ester is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chiral purity analysis, to ensure compliance with exacting R&D and process chemistry standards. Comprehensive Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are 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). This compound may be sensitive to moisture and prolonged exposure to elevated temperatures.

Specification

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