Description

3-Ethyl-2-[(E)-2-(3-((E)-2-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]Ethylidene)-2-Methyl-1-Cyclopenten-1-Yl)Ethenyl]-1,3-Benzothiazol-3-Ium Iodide is a high-purity cyanine dye salt, a critical functional material valued for its strong near-infrared (NIR) absorption and fluorescence properties. Its primary commercial value lies in its role as a key intermediate and sensitizer in advanced optical and electronic applications, where precise molecular structure ensures consistent performance. This compound is essential for manufacturers and R&D laboratories in the photonics, imaging, and specialty chemical sectors.

Application

• NIR Fluorescent Dye Synthesis: A crucial building block for synthesizing heptamethine cyanine dyes used in bioimaging and medical diagnostics.
• Optical Sensitizer: Used in photographic emulsions, photopolymerization initiators, and dye-sensitized solar cells (DSSCs) to enhance light absorption.
• Laser Dye Intermediate: Serves as a precursor for tunable dye lasers operating in the near-infrared spectrum.
• Non-Linear Optical Materials: Incorporated into polymers and crystals for applications in optical limiting, switching, and data storage.
• Analytical Chemistry Reagent: Employed as a staining agent or probe in spectroscopic analysis and sensor development.
• Academic & Industrial Research: Used in fundamental studies of photophysical properties and the development of new functional materials.

Basic Information

Item	Details
Product Name	3-Ethyl-2-[(E)-2-(3-((E)-2-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]Ethylidene)-2-Methyl-1-Cyclopenten-1-Yl)Ethenyl]-1,3-Benzothiazol-3-Ium Iodide
CAS No.	70446-31-0
Molecular Formula	C29H29IN2S2
Molecular Weight	620.58 g/mol
Synonyms	IR-780 Iodide; 3-Ethyl-2-[2-[3-(2-(3-Ethyl-2(3H)-benzothiazolylidene)ethylidene)-2-methyl-1-cyclopenten-1-yl]ethenyl]-1,3-benzothiazolium iodide; 2-[2-[3-[(1E)-2-(3-Ethyl-1,3-benzothiazol-2(3H)-ylidene)ethylidene]-2-methylcyclopent-1-en-1-yl]ethenyl]-3-ethyl-1,3-benzothiazol-3-ium iodide; Cyanine dye IR-780; NIR Cyanine dye salt; Heptamethine cyanine dye intermediate; Benzothiazolium, 3-ethyl-2-[(E)-2-[3-[(E)-2-(3-ethyl-2(3H)-benzothiazolylidene)ethylidene]-2-methyl-1-cyclopenten-1-yl]ethenyl]-, iodide (1:1)
EINECS	Contact for details

Quality Control

Our production of 3-Ethyl-2-[(E)-2-(3-((E)-2-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]Ethylidene)-2-Methyl-1-Cyclopenten-1-Yl)Ethenyl]-1,3-Benzothiazol-3-Ium Iodide adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and IR for structural confirmation, and spectrophotometry for optical property verification. Certificates of Analysis (COA) detailing all specifications are provided to ensure traceability and compliance with your research or manufacturing requirements.

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 and should be handled under appropriate conditions to prevent degradation. Keep the container tightly sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
UV-Vis Absorption (λmax)	780 nm ± 5 nm (in suitable solvent)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 1.0%

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