Description

1-Ethyl-2-(5-(1-Ethyl-1,3-Benzthiazolin-2-Yliden)-Penta-1,3- Dien-1-Yl)-1,3-Benzthiazolium-Chloride is a specialized cationic cyanine dye belonging to the benzothiazole class, valued for its strong light-absorbing and fluorescent properties. This compound matters for its critical role as a functional intermediate and sensitizer in advanced material science and photochemical applications. It is primarily needed by manufacturers and R&D facilities in the photographic, optical data storage, and non-linear optical (NLO) material industries, where precise light interaction is paramount.

Application

• Photosensitizer and Spectral Sensitizer in silver halide photographic emulsions and films.
• Key intermediate for the synthesis of advanced cyanine dyes used in laser technology and optical recording media.
• Component in the research and development of non-linear optical (NLO) materials for photonics and optoelectronics.
• Used in the formulation of specialized light-harvesting complexes and dye-based solar cell research.
• Potential application as a fluorescent probe or marker in analytical chemistry and bio-imaging studies.
• Raw material for producing dyes used in high-density optical data storage systems (e.g., CD-R, DVD-R).

Basic Information

Item	Details
Product Name	1-Ethyl-2-(5-(1-Ethyl-1,3-Benzthiazolin-2-Yliden)-Penta-1,3- Dien-1-Yl)-1,3-Benzthiazolium-Chloride
CAS No.	54646-38-7
Molecular Formula	C23H23ClN2S2
Molecular Weight	426.02 g/mol
Synonyms	1-Ethyl-2-[5-(1-ethyl-1,3-benzothiazol-2(3H)-ylidene)penta-1,3-dien-1-yl]-1,3-benzothiazol-3-ium chloride; 2-[5-(1,3-Benzothiazol-2-yl)penta-2,4-dienylidene]-1-ethyl-1,3-benzothiazol-3-ium chloride; Cyanine dye derivative; Benzothiazolium cyanine dye; Photographic sensitizing dye; Optical sensitizer 54646-38-7
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and high purity. Quality is verified through analytical techniques including HPLC, UV-Vis spectroscopy, and NMR. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and R&D documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is light-sensitive (store away from light). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	Conforms
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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