Description

3H-Indolium, 2-2-(4,5-Dihydro-3,5-Diphenyl-1H-Pyrazol-1-Yl)Ethenyl-1,3,3-Trimethyl-, Chloride is a specialized cationic dye intermediate belonging to the cyanine dye family, valued for its distinct photophysical properties. This compound is critical for applications requiring precise light absorption and emission characteristics, offering a high degree of molecular tunability. It is primarily sought by manufacturers in the advanced materials, optical data storage, and biomedical imaging sectors for developing next-generation functional dyes and sensors.

Application

• Cyanine Dye Synthesis: A key precursor for manufacturing near-infrared (NIR) fluorescent dyes and labels used in bioimaging and diagnostics.
• Optical Recording Media: Utilized in the formulation of advanced dyes for recordable CDs, DVDs, and Blu-ray discs.
• Laser Technology: Serves as a gain medium or saturable absorber in tunable dye lasers and other photonic devices.
• Non-Linear Optical Materials: Incorporated into polymers and crystals for applications in optical limiting, switching, and frequency conversion.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for targeted cancer treatments.
• Chemical Sensors: Used in the development of colorimetric and fluorescent sensors for detecting specific ions or molecules.
• Textile Dyeing: Applied in niche, high-performance textile coloring where specific light-fastness and hue are required.
• Academic & Industrial R&D: A vital research chemical for exploring new photochemical reactions and material properties.

Basic Information

Product Name	3H-Indolium, 2-2-(4,5-Dihydro-3,5-Diphenyl-1H-Pyrazol-1-Yl)Ethenyl-1,3,3-Trimethyl-, Chloride
CAS No.	52204-20-3
Molecular Formula	C31H32ClN3
Molecular Weight	482.06 g/mol
Synonyms	1,3,3-Trimethyl-2-[2-(3,5-diphenyl-4,5-dihydro-1H-pyrazol-1-yl)ethenyl]-3H-indolium chloride; 2-[2-(3,5-Diphenyl-1-pyrazolin-1-yl)vinyl]-1,3,3-trimethyl-3H-indolium chloride; Basic Red 12 (related class); Cationic Cyanine Dye Intermediate; Pyrazolinyl Styryl Dye; Astrazon Red GTLN (analogous); Aizen Cathilon Red GTLH (analogous); Styryl 7 (common research name)
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with your research or manufacturing specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed in a desiccated environment away from direct light exposure to maintain stability and prevent degradation.

Specification

Item	Specification
Appearance	Dark green to brownish-green crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in methanol, ethanol, DMSO; slightly soluble in water

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