Description

4-(4-Methoxy-3-Sulfophenyl)-2,6-Bis-(4-Sulfophenyl)Pyrylium is a specialized organic salt belonging to the pyrylium dye class, characterized by its multiple sulfonate groups which impart high water solubility and anionic character. This compound matters as a key functional intermediate and chromophore, valued for its strong light-absorbing properties and ability to form stable complexes. It is primarily needed by manufacturers in the dyes and pigments, optical materials, and analytical chemistry sectors for advanced applications.

Application

• Sensitizer and Photoinitiator: Used in the formulation of light-curable inks, coatings, and photoresists.
• Functional Dye Intermediate: Serves as a key building block for synthesizing water-soluble cationic dyes and fluorescent markers.
• Optical Data Storage: Employed in the research and development of materials for holographic and digital recording media.
• Analytical Reagent: Acts as a chromogenic agent or complexing agent in spectrophotometric analysis and sensor technologies.
• Biomedical Staining: Investigated for use in histological stains and as a probe in bio-imaging due to its optical properties.
• Nonlinear Optical Materials: A candidate component for advanced photonic and electro-optic devices.

Basic Information

Product Name	4-(4-Methoxy-3-Sulfophenyl)-2,6-Bis-(4-Sulfophenyl)Pyrylium
CAS No.	91788-04-4
Molecular Formula	C24H18O10S3
Molecular Weight	562.58 g/mol
Synonyms	Pyrylium, 4-(4-methoxy-3-sulfophenyl)-2,6-bis(4-sulfophenyl)-; 2,6-Bis(4-sulfophenyl)-4-(4-methoxy-3-sulfophenyl)pyrylium; Trisulfonated Pyrylium Dye; Water-soluble Pyrylium Salt; Anionic Pyrylium Compound; 91788-04-4; 4-(4-Methoxy-3-sulfophenyl)-2,6-di(4-sulfophenyl)pyrylium
EINECS	Contact for details

Quality Control

Our production of 4-(4-Methoxy-3-Sulfophenyl)-2,6-Bis-(4-Sulfophenyl)Pyrylium adheres to stringent in-process controls to ensure batch-to-batch consistency and high purity. Each lot is analyzed to confirm identity, potency, and the absence of critical impurities. Certificates of Analysis (COA) documenting key specifications are available upon request to support your quality assurance protocols.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance and stability.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%
Solubility (in Water)	Clear, yellow solution

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