Description

Pyridinium, 2-[5-Phenyl-2-[2-[5-Phenyl-3-(2-Sulfonato Ethyl)Benzoxazolin-2-Ylidenemethyl]-1-Butenyl]-3-Benzoxazolio]Ethansulfonate 5/2 Hydrate is a specialized, high-purity organic salt belonging to the benzoxazolium dye class, distinguished by its sulfonated and pyridinium functional groups. This compound is valued for its strong light-absorbing properties and ionic character, making it a critical functional material in advanced technological applications. It is primarily sought by manufacturers in the optical, imaging, and specialty chemical industries for its role in creating high-performance dyes and functional additives.

Application

• Optical Data Storage Media: As a key light-absorbing component in the active layers of recordable (e.g., CD-R, DVD-R) and archival-grade optical discs.
• Laser Dye and Filter Manufacturing: Used in the synthesis of tunable laser dyes and optical filters due to its specific absorption profile.
• Non-Linear Optical (NLO) Materials: A potential candidate for research and development of materials for photonics, frequency doubling, and electro-optic modulation.
• Specialty Inks and Coatings: Employed as a functional pigment or additive in security inks, UV-curable coatings, and high-stability colorants.
• Biomedical Imaging and Staining: Investigated for use as a fluorescent probe or contrast agent in specific histological and diagnostic applications.
• Organic Photovoltaic (OPV) Research: Serves as an electron-accepting or light-harvesting material in the development of next-generation solar cells.
• Chemical Synthesis Intermediate: Used as a building block for synthesizing more complex heterocyclic compounds and ionic liquids.

Basic Information

Product Name	Pyridinium, 2-[5-Phenyl-2-[2-[5-Phenyl-3-(2-Sulfonato Ethyl)Benzoxazol-2-Ylidenemethyl]-1-Butenyl]-3-Benzoxazolio]Ethansulfonate 5/2 Hydrate
CAS No.	41665-49-0
Molecular Formula	C41H39N3O9S2 • 2.5H2O
Molecular Weight	Approx. 822.92 g/mol (Anhydrous basis)
Synonyms	2-[5-Phenyl-2-[2-[5-Phenyl-3-(2-sulfonatoethyl)benzoxazolin-2-ylidenemethyl]-1-butenyl]-3-benzoxazolio]ethanesulfonate pyridinium salt 5/2 hydrate; Optical Recording Dye 41665-49-0; Benzoxazolium, 3-ethyl-2-[5-[3-ethyl-2-benzoxazolylidene)-1,3-pentadienyl]-, salt with pyridine, bis(inner salt), hydrate; NK 5294 (potential trade name); Cyanine dye derivative 41665-49-0; Sulfonated benzoxazolium pyridinium salt; Heptamethine oxonol dye analog; 41665-49-0 Hydrate
EINECS	Contact for details

Quality Control

Our production of this advanced functional dye adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized using advanced analytical techniques including HPLC for purity, UV-Vis spectroscopy for absorption profile verification, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing identity, purity, residual solvents, and other critical parameters is provided with every shipment to support your quality assurance and regulatory needs.

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); the container must be kept tightly sealed in a dry environment to prevent absorption of atmospheric moisture, which can affect performance. For long-term storage beyond one year, consider storage under an inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	λmax conforms to reference
Assay (HPLC)	≥ 98.0% (anhydrous basis)
Water Content (KF)	5.0 - 7.0% (corresponding to 5/2 hydrate)
Residual Solvents (GC)	Meets ICH Q3C guidelines
Heavy Metals (as Pb)	≤ 20 ppm
Specific Absorption Coefficient	Contact for details

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