Description

4-[4-[3-[3-Hydroxy-5-Oxo-1-(4-Potassiosulfophenyl)-2-Pyrazolin-4-Ylidene]-1-Propenyl]-3,5-Dihydroxy-1H-Pyrazol-1-Yl]Benzenesulfonic Acid Potassium Salt is a high-purity, water-soluble pyrazolone derivative with significant commercial and research utility. This compound is valued for its role as a key synthetic intermediate and functional dye precursor, offering consistent performance and batch-to-batch reliability. It is primarily sought by manufacturers in the fine chemical, specialty dye, and advanced material sectors for applications requiring precise molecular structure and purity.

Application

• Synthesis of Functional Dyes and Pigments: Serves as a crucial intermediate for producing azo and pyrazolone-based dyes used in textiles, inks, and coatings.
• Biochemical Research Reagent: Utilized in the development of chromogenic substrates and probes for enzymatic assays and diagnostic applications.
• Photographic Industry: Acts as a sensitizer or coupler in specialized photographic chemicals and imaging materials.
• Material Science: Investigated for use in the synthesis of organic semiconductors and light-harvesting materials due to its conjugated structure.
• Analytical Chemistry: Employed as a complexing agent or indicator in certain spectrophotometric and chelatometric titration methods.
• Pharmaceutical Intermediate: Used in the research and development of novel therapeutic agents, particularly those targeting specific biological pathways.

Basic Information

Product Name	4-[4-[3-[3-Hydroxy-5-Oxo-1-(4-Potassiosulfophenyl)-2-Pyrazolin-4-Ylidene]-1-Propenyl]-3,5-Dihydroxy-1H-Pyrazol-1-Yl]Benzenesulfonic Acid Potassium Salt
CAS No.	59386-87-7
Molecular Formula	C21H15K2N4O10S2
Molecular Weight	649.67 g/mol
Synonyms	Potassium 4-[4-[3-[3-hydroxy-5-oxo-1-(4-sulfonatophenyl)-2-pyrazolin-4-ylidene]-1-propenyl]-3,5-dihydroxy-1H-pyrazol-1-yl]benzenesulfonate; 59386-87-7; 4-[4-[3-[3-Hydroxy-5-oxo-1-(4-sulfophenyl)-2-pyrazolin-4-ylidene]-1-propenyl]-3,5-dihydroxy-1H-pyrazol-1-yl]benzenesulfonic acid dipotassium salt; Pyrazolone derivative potassium salt; Acid Yellow 9 related compound; Water-soluble pyrazolone dye intermediate
EINECS	Contact for details

Quality Control

Our production of 4-[4-[3-[3-Hydroxy-5-Oxo-1-(4-Potassiosulfophenyl)-2-Pyrazolin-4-Ylidene]-1-Propenyl]-3,5-Dihydroxy-1H-Pyrazol-1-Yl]Benzenesulfonic Acid Potassium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all specifications are provided and can be tailored to meet specific customer or regulatory requirements.

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). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (1% in Water)	Clear, yellow solution

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