Description

3-Ethyl-2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]Benzothiazolium Chloride is a specialized benzothiazolium dye salt, a member of the cyanine dye family, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound matters for its role as a key functional material in advanced optical and electronic applications, where precise light interaction is critical. It is primarily needed by manufacturers and researchers in the photonics, semiconductor, and biomedical imaging sectors seeking high-performance sensitizers and markers.

Application

• Optical Data Storage: As a light-absorbing layer in recordable optical discs (e.g., CD-R, DVD-R) for laser writing.
• Laser Dyes & Sensitizers: Used in the formulation of tunable dye lasers and as a photosensitizer in photopolymerization and photodynamic therapy research.
• Non-Linear Optical Materials: A component in the development of materials for frequency doubling, optical limiting, and other photonic devices.
• Biomedical Imaging Probes: Potential application as a fluorescent tag or contrast agent in NIR fluorescence imaging due to its emission profile.
• Organic Photovoltaics (OPV): Investigated for use in light-harvesting layers of solar cells to improve photon absorption.
• Chemical Sensors: Employed in the design of optochemical sensors where its optical properties change upon interaction with specific analytes.

Basic Information

Product Name	3-Ethyl-2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]Benzothiazolium Chloride
CAS No.	93859-01-9
Molecular Formula	C23H23ClN2S2
Molecular Weight	426.02 g/mol
Synonyms	2-[3-(3-Ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propen-1-yl]-3-ethylbenzothiazolium chloride; 3-Ethyl-2-[3-(3-ethyl-2-benzothiazolinylidene)-2-methyl-1-propenyl]benzothiazolium Chloride; NK-2016; Cyanine dye NK-2016; Benzothiazolium, 3-ethyl-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]-, chloride; 2-[3-(3-Ethyl-2-benzothiazolinylidene)-2-methyl-1-propenyl]-3-ethylbenzothiazolium chloride
EINECS	Contact for details

Quality Control

Our 3-Ethyl-2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]Benzothiazolium Chloride is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets precise customer specifications for optical applications. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance maxima, and other critical parameters is provided with every shipment.

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 hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light to maintain product integrity.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Absorption Maxima (λmax)	Contact for details
Residue on Ignition	≤ 0.5%

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