Description

2,5-Diphenyloxazole-4-Sulfonic Acid Sodium Salt is a high-purity, water-soluble derivative of the classic scintillator PPO (2,5-Diphenyloxazole). This compound matters as a versatile intermediate and functional additive, prized for its sulfonic acid group which enhances solubility and allows for further chemical modifications. It is needed by manufacturers in the life sciences, analytical chemistry, and specialty materials sectors for applications ranging from fluorescent probes to polymer synthesis.

Application

• Fluorescent Probe Synthesis: Acts as a key precursor for developing water-soluble fluorescent tags and sensors used in bioimaging and diagnostic assays.
• Scintillation Cocktails: Serves as a water-compatible component or intermediate in liquid scintillation counting formulations for radiation detection.
• Polymer & Material Science: Used as a functional monomer or additive to introduce fluorescent or hydrophilic properties into advanced polymers and coatings.
• Pharmaceutical Intermediates: Employed in the research and development of novel drug candidates, particularly where a sulfonated, fluorescent moiety is desired.
• Analytical Reagents: Functions as a standard or reagent in chromatographic methods (HPLC) and other analytical techniques.
• Chemical Research: A valuable building block in organic synthesis for creating novel heterocyclic compounds with specific optical properties.

Basic Information

Product Name	2,5-Diphenyloxazole-4-Sulfonic Acid Sodium Salt
CAS No.	134971-33-8
Molecular Formula	C21H14NNaO4S
Molecular Weight	399.39 g/mol
Synonyms	PPO-Sulfonate Sodium Salt; Sodium 2,5-diphenyloxazole-4-sulfonate; 4-Sulfo-2,5-diphenyloxazole Sodium Salt; 2,5-Diphenyl-4-oxazolesulfonic Acid Sodium Salt; 2,5-Diphenyloxazole-4-sulfonic Acid Sodium Salt; PPO-SO3Na; Scintillation Grade PPO Derivative; Sodium Diphenyloxazolesulfonate
EINECS	Contact for details

Quality Control

Our 2,5-Diphenyloxazole-4-Sulfonic Acid Sodium Salt is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets precise customer specifications and high-purity standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment and is available upon request.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, colorless solution

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