Description

Pyrylium is a versatile organic cation and a fundamental building block in heterocyclic chemistry, widely recognized for its role in synthesizing pyridine derivatives and other valuable heterocyclic compounds. Its significance lies in its unique electrophilic properties, which enable efficient synthesis of complex molecules used in pharmaceuticals, agrochemicals, and advanced materials. This compound is essential for R&D chemists and production units in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediates: A key precursor in the synthesis of various pyridine-based drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides that contain pyridine or related heterocyclic structures.
• Dye and Pigment Manufacturing: Serves as an intermediate for creating certain cationic dyes and functional colorants.
• Material Science Research: Employed in the development of organic semiconductors, photoactive materials, and ionic liquids.
• Chemical Synthesis Reagent: Acts as a versatile electrophile in organic synthesis for constructing complex heterocyclic frameworks in academic and industrial research.
• Analytical Chemistry: Can be used as a derivatization agent or a standard in chromatographic and spectroscopic methods.

Basic Information

Item	Details
Product Name	Pyrylium
CAS No.	289-67-8
Molecular Formula	C5H5O+
Molecular Weight	81.09 g/mol
Synonyms	Pyrylium cation; Pyrylium ion; 1-Oxacyclohexadienylium; 2,4,6-Triphenylpyrylium tetrafluoroborate (common salt form); Pyrylium tetrafluoroborate; Pyrylium salt; Pyrylium fluoroborate; 1-Oxoniabenzene
EINECS	206-025-5

Quality Control

Our Pyrylium products are manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, identity, and impurity profiles. Our quality system is designed to meet the rigorous demands of pharmaceutical and fine chemical synthesis. Certificates of Analysis (COA) are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent exposure to atmospheric moisture. For long-term storage, consider using desiccants or an inert atmosphere.

Specification

Item	Specification
Appearance	Off-white to yellow crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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