Description

5H-8,2,4A-Ethanylylidene-2H-1-Benzopyran,8A-Ethoxy-3,4,7,8-Tetrahydro-2-Methyl-(9Ci) is a complex, high-purity organic intermediate of significant interest in advanced chemical synthesis. Its unique fused benzopyran structure makes it a valuable building block for pharmaceutical research and the development of novel fine chemicals. This compound is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for creating new molecular entities with targeted biological or material properties.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for central nervous system (CNS) or anti-inflammatory targets.
• Agrochemical Research: Used in the development of new herbicides, fungicides, or plant growth regulators leveraging its heterocyclic core.
• Material Science: Acts as a monomer or functional additive in the research of advanced polymers, liquid crystals, or organic electronic materials.
• Chemical Biology Probe: Employed as a scaffold for designing molecular probes to study enzyme function or cellular pathways.
• Catalyst Ligand Synthesis: Utilized in the preparation of specialized chiral or non-chiral ligands for asymmetric catalysis and metal-organic frameworks (MOFs).
• Flavor & Fragrance Intermediate: Potential use in the synthesis of complex aroma chemicals due to its oxygenated, bicyclic structure.

Basic Information

Product Name	5H-8,2,4A-Ethanylylidene-2H-1-Benzopyran,8A-Ethoxy-3,4,7,8-Tetrahydro-2-Methyl-(9Ci)
CAS No.	241818-53-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	8a-Ethoxy-3,4,7,8-tetrahydro-2-methyl-5H-8,2,4a-ethanylylidene-2H-1-benzopyran; 5H-8,2,4a-Ethanylylidene-2H-1-benzopyran, 8a-ethoxy-3,4,7,8-tetrahydro-2-methyl-; 8a-Ethoxy-2-methyl-3,4,7,8-tetrahydro-5H-8,2,4a-ethanylylidene-2H-1-benzopyran; 241818-53-1; Benzopyran derivative CAS 241818-53-1; Ethoxy-tetrahydro-methyl-benzopyran ethanylylidene.
EINECS	Contact for details

Quality Control

Every batch of this high-value intermediate is produced and tested under a strict ISO 9001:2015 certified quality management system. We employ advanced analytical techniques including HPLC, GC, NMR, and Mass Spectrometry to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing purity (typically >97% by HPLC), residual solvents, and specific impurities is provided with each shipment to support your regulatory and R&D documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0%
Related Substances (HPLC)	Any single impurity ≤ 1.0%; Total impurities ≤ 3.0%
Residual Solvents (GC)	Complies with ICH Q3C guidelines
Loss on Drying	≤ 0.5%

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