Description

4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Trimethine Oxonole Dipotassium Salt is a high-purity, water-soluble anionic dye belonging to the oxonole class, valued for its strong and stable chromophore. This compound is essential for applications requiring precise colorimetric analysis, optical sensing, and specialized staining due to its excellent photophysical properties. It is primarily utilized by research institutions, diagnostic kit manufacturers, and advanced material scientists developing functional dyes and sensors.

Application

• Biochemical Staining & Labeling: Used as a fluorescent or colorimetric probe for staining biological tissues, cells, and proteins in microscopy and histology.
• Diagnostic Reagents: A key component in the formulation of diagnostic kits and test strips for clinical and research laboratories.
• Optical Sensors & Indicators: Incorporated into sensor matrices for the detection of pH changes, metal ions, or specific biomolecules.
• Functional Dye Intermediate: Serves as a critical building block for synthesizing more complex dyes and pigments with tailored properties.
• Photographic & Imaging Materials: Employed in specialized photographic emulsions and non-silver imaging systems.
• Laser Dye & Nonlinear Optics: Potential use in the development of tunable laser dyes and materials for nonlinear optical applications.

Basic Information

Product Name	4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Trimethine Oxonole Dipotassium Salt
CAS No.	66096-14-8
Molecular Formula	C31H18K2N4O13S2
Molecular Weight	812.83 g/mol
Synonyms	Oxonol V; Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Trimethine Oxonole Dipotassium Salt; 4,4'-Bis(3-carboxy-5-oxo-1-(4-sulfophenyl)-4,5-dihydro-1H-pyrazol-4-yl)trimethine oxonole dipotassium salt; 66096-14-8; Oxonol dye V; Anionic oxonol dye; Diagnostic dye V; Potassium 4,4'-(1E,3E)-3-(2-carboxy-5-oxo-1-(4-sulfonatophenyl)-4,5-dihydro-1H-pyrazol-4-yl)prop-2-ene-1,1,3-triyl)bis(5-oxo-1-(4-sulfonatophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylate)
EINECS	Contact for details

Quality Control

Our 4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Trimethine Oxonole Dipotassium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and diagnostic applications. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance characteristics, and other critical parameters is provided with every shipment.

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 material is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed and in the original packaging until use to prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference
Purity (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Absorbance Max (λmax)	Contact for details
Extinction Coefficient	Contact for details
Heavy Metals	≤ 20 ppm

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