Description

5,6,7,8-Tetrahydro-2-Methyl-1-Benzopyrylium is a versatile organic cation and a key synthetic intermediate in heterocyclic chemistry. Its value lies in its role as a precursor for the synthesis of complex chromene and pyrylium derivatives, which are important structural motifs in various functional materials. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing novel active ingredients and dyes.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block for the synthesis of novel drug candidates, particularly those with chromene or benzopyran scaffolds.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, leveraging its heterocyclic structure.
• Dye and Pigment Precursor: Acts as a key intermediate in the production of specialized cationic dyes and functional colorants.
• Material Science Research: Employed in the development of organic semiconductors, photoactive materials, and advanced polymers.
• Flavor and Fragrance Chemistry: Utilized as a synthetic intermediate for creating complex aroma chemicals and flavoring agents.
• Academic & R&D: A valuable reagent for methodological studies in organic synthesis and heterocyclic chemistry at universities and corporate R&D centers.

Basic Information

Product Name	5,6,7,8-Tetrahydro-2-Methyl-1-Benzopyrylium
CAS No.	45883-75-8
Molecular Formula	C10H13O+ (typically as a salt, e.g., perchlorate or tetrafluoroborate)
Molecular Weight	149.21 g/mol (for the cation)
Synonyms	2-Methyl-5,6,7,8-tetrahydro-1-benzopyrylium; 2-Methyl-5,6,7,8-tetrahydrochromenylium; 5,6,7,8-Tetrahydro-2-methylchromenylium; 2-Methyl-5,6,7,8-tetrahydro-1-benzopyrylium cation; Tetrahydro-2-methylbenzopyrylium
EINECS	Contact for details

Quality Control

Our 5,6,7,8-Tetrahydro-2-Methyl-1-Benzopyrylium is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters such as assay (HPLC/NMR), residual solvent content, and identification data. Our quality systems support development from laboratory to commercial scale, ensuring reliable supply for your critical applications.

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 incompatible materials. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (NMR)	Conforms
Loss on Drying	≤ 1.0%
Residual Solvents (GC)	Meets ICH guidelines

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