Description

Pyridinium, 2-[[3-Ethyl-5-(3-Methyl-2(3H)-Benzothiazolylidene)-4-Oxo-2-Thiazolidinylidene]Methyl]-1-Methyl-, Chloride (1:1) is a specialized organic salt belonging to the class of cyanine dyes, characterized by its complex heterocyclic structure. This compound matters for its unique photophysical properties, making it a critical functional material in advanced research and development. It is primarily needed by manufacturers and researchers in the fields of optical materials, dye-sensitized solar cells (DSSCs), and as a potential photosensitizer or fluorescent probe for analytical and diagnostic applications.

Application

• Dye-Sensitized Solar Cells (DSSCs): As a key component of the photosensitizer layer to absorb light and initiate electron transfer.
• Optical Data Storage: Utilized in the development of materials for high-density recording media due to its light-sensitive properties.
• Non-Linear Optical (NLO) Materials: Serves as a building block for compounds with applications in photonics, telecommunications, and laser technology.
• Fluorescent Labeling & Probes: Potential use in bio-imaging, chemical sensing, and diagnostic assays where specific fluorescence signatures are required.
• Photopolymerization Initiators: Can be employed in light-curable resins, inks, and coatings for industrial and electronic applications.
• Academic & Industrial R&D: A valuable intermediate for synthetic chemists exploring new functional dyes and advanced organic materials.

Basic Information

Product Name	Pyridinium, 2-[[3-Ethyl-5-(3-Methyl-2(3H)-Benzothiazolylidene)-4-Oxo-2-Thiazolidinylidene]Methyl]-1-Methyl-, Chloride (1:1)
CAS No.	409086-68-6
Molecular Formula	C21H22ClN3OS2
Molecular Weight	432.00 g/mol
Synonyms	2-[[3-Ethyl-5-(3-methyl-2(3H)-benzothiazolylidene)-4-oxo-2-thiazolidinylidene]methyl]-1-methylpyridinium chloride; Cyanine dye derivative; 1-Methyl-2-((3-ethyl-5-((3-methylbenzo[d]thiazol-2(3H)-ylidene))-4-oxo-2-thioxothiazolidin-2-ylidene)methyl)pyridin-1-ium chloride; Thiazolidinone cyanine dye; Benzothiazolylidene-based pyridinium salt; Optical sensitizer 409086-68-6; Contact for details on trade names.
EINECS	Contact for details

Quality Control

Our production of this advanced chemical intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical characterization, including HPLC for purity, NMR and IR for structural confirmation, and elemental analysis. A detailed Certificate of Analysis (COA) documenting all specifications is provided with every shipment to support your R&D and quality assurance processes.

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 compound is light-sensitive (store away from light) and hygroscopic (moisture-sensitive). For long-term storage, consider desiccant and an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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