Description

3-Methyl-2-Butenoic Acid 4A,5,8,9-Tetrahydro-9,9-Dimethyl-5-Oxobenzo[1,2-B:4,3-B']Dipyran-8-Yl Ester is a specialized organic ester compound with a complex, fused-ring structure, identified by CAS NO 55334-28-6. This high-purity intermediate is valued for its unique molecular architecture, which makes it a critical building block in advanced synthetic chemistry. It is primarily sought after by research and development teams in the pharmaceutical and fine chemical industries for the synthesis of novel active compounds and complex molecular frameworks.

Application

• Pharmaceutical Intermediate: A key synthetic precursor in the research and development of new active pharmaceutical ingredients (APIs), particularly for complex heterocyclic targets.
• Fine Chemical Synthesis: Used in multi-step organic synthesis to construct sophisticated molecular scaffolds for agrochemicals, dyes, and specialty materials.
• Academic & Industrial Research: Serves as a valuable reagent in methodological studies and for exploring new chemical reactions involving ester and lactone functionalities.
• Material Science Research: Potential building block for developing novel polymers or organic electronic materials with specific optical or electronic properties.
• Process Chemistry Development: Employed in scaling up synthetic routes from laboratory to pilot plant scale for commercial production.

Basic Information

Product Name	3-Methyl-2-Butenoic Acid 4A,5,8,9-Tetrahydro-9,9-Dimethyl-5-Oxobenzo[1,2-B:4,3-B']Dipyran-8-Yl Ester
CAS No.	55334-28-6
Molecular Formula	C19H22O5
Molecular Weight	330.38 g/mol
Synonyms	8-(3-Methylbut-2-enoyloxy)-4a,5,8,9-tetrahydro-9,9-dimethyl-5-oxobenzo[1,2-b:4,3-b']dipyran; 3,3-Dimethyl-8-(3-methylcrotonoyloxy)-4a,5,8,9-tetrahydro-5-oxofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxol-6(4aH)-one; 3-Methyl-2-butenoic acid ester with 4a,5,8,9-tetrahydro-9,9-dimethyl-5-oxobenzo[1,2-b:4,3-b']dipyran-8-ol; 55334-28-6; 8-Angeloyloxy-4a,5,8,9-tetrahydro-9,9-dimethyl-5-oxobenzo[1,2-b:4,3-b']dipyran
EINECS	Contact for details

Quality Control

Our 3-Methyl-2-Butenoic Acid 4A,5,8,9-Tetrahydro-9,9-Dimethyl-5-Oxobenzo[1,2-B:4,3-B']Dipyran-8-Yl Ester is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, to ensure high chemical purity and structural identity. Certificates of Analysis (COA) detailing purity, impurities, and physical characteristics are provided with every shipment to support your quality assurance and regulatory compliance needs.

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 heat, sparks, and open flame. The container should be kept tightly sealed when not in use to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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