Description

2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-3-(2-Hydroxyethyl)Benzothiazolium Bromide is a specialized cationic cyanine dye with significant utility in advanced material science and diagnostics. Its core value lies in its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical functional component for high-sensitivity applications. This compound is essential for research and manufacturing in the photonics, biotechnology, and semiconductor industries, where precise light-matter interaction is required.

Application

• NIR Fluorescent Dye Synthesis: A key intermediate for synthesizing near-infrared fluorescent probes and labels used in bioimaging and medical diagnostics.
• Optical Data Storage: Used in the formulation of recording layers for advanced optical discs and holographic media due to its photochromic properties.
• Laser Technology: Functions as a gain medium or saturable absorber in dye lasers and optical switches operating in specific wavelength ranges.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer in the development of new non-invasive cancer treatments.
• Semiconductor and Solar Cell Research: Applied in the development of organic photovoltaics (OPV) and dye-sensitized solar cells (DSSC) as a light-harvesting material.
• Chemical Sensing: Utilized in the design of chemosensors for detecting specific ions or molecules based on fluorescence quenching or enhancement.
• Non-Linear Optical Materials: Incorporated into polymers and crystals to study and exploit non-linear optical effects for telecommunications and computing.

Basic Information

Product Name	2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-3-(2-Hydroxyethyl)Benzothiazolium Bromide
CAS No.	84434-66-2
Molecular Formula	C24H25BrN2O S2
Molecular Weight	501.50 g/mol
Synonyms	2-[3-(3-Ethylbenzothiazol-2(3H)-ylidene)-2-methylprop-1-en-1-yl]-3-(2-hydroxyethyl)-1,3-benzothiazol-3-ium bromide; Benzothiazolium, 2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]-3-(2-hydroxyethyl)-, bromide; Cyanine dye derivative; NIR cyanine dye intermediate; 3-Ethyl-2-[3-(3-ethyl-2-benzothiazolinylidene)-2-methyl-1-propenyl]benzothiazolium bromide analog; Hydroxyethyl benzothiazolium cyanine dye
EINECS	Contact for details

Quality Control

Our production of this high-purity specialty chemical adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity verification, spectroscopic identification (NMR, IR), and elemental analysis, to ensure consistency and meet precise customer specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting all critical quality parameters.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0% (Area %)
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in DMSO, DMF; sparingly soluble in methanol

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