Description

4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Pentamethine Oxonole Dipotassium Salt is a high-purity, water-soluble pentamethine oxonole dye derivative, valued for its strong and specific chromogenic properties. This compound is essential for applications requiring precise colorimetric detection and high-performance optical characteristics. It is primarily utilized by manufacturers in the life sciences, analytical chemistry, and specialty chemical sectors for diagnostic reagents, research probes, and advanced material synthesis.

Application

• Biochemical Reagents: Key component in the formulation of colorimetric and fluorescent diagnostic kits and assays.
• Research Probes: Used as a chromogenic substrate or indicator in enzymatic and molecular biology research.
• Analytical Chemistry: Serves as a sensitive dye for detection and quantification in various chromatographic and spectroscopic methods.
• Specialty Dyes & Stains: Employed in the development of specialized stains for microscopy, histology, and cell biology.
• Photographic Sensitizers: Potential use in advanced photographic and imaging technologies due to its light-absorbing properties.
• Material Science: Investigated for incorporation into functional polymers and optical materials.

Basic Information

Product Name	4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Pentamethine Oxonole Dipotassium Salt
CAS No.	51858-17-4
Molecular Formula	C33H22K2N4O13S2
Molecular Weight	848.87 g/mol
Synonyms	Pentamethine Oxonole Dye, Dipotassium Salt; 4,4'-[1,5-Pentanediylbis[4-(4-sulfophenyl)-5-oxo-1H-pyrazole-3,1-diyl]]bis[4-oxo-2-butenoic acid] dipotassium salt; Bis-pyrazolone oxonole dye; K-PMB; Diagnostic dye 51858-17-4; Water-soluble pentamethine dye; Oxonol V dipotassium salt (related analog)
EINECS	Contact for details

Quality Control

Our production of 4,4'-Bis[3-Carboxy-5-Oxo-1-(4-Sulfophenyl)-2-Pyrazolin-4-Yl]Pentamethine Oxonole Dipotassium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity suitable for sensitive applications. All materials are characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a low-humidity environment to prevent degradation. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	Dark red to purple powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, intense color solution

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