Description

2-[[3-(2-Carboxyethyl)-3H-Benzothiazol-2-Ylidene]Methyl]-1-Ethylquinolinium Iodide is a high-purity, synthetic cyanine dye intermediate with significant commercial and research value. This compound is essential for its role in the synthesis of near-infrared (NIR) fluorescent probes and sensitizers, offering precise optical properties. It is primarily sought by manufacturers and R&D teams in the photographic, optical data storage, biomedical imaging, and dye-sensitized solar cell (DSSC) industries.

Application

• Synthesis of NIR Cyanine Dyes: A key precursor for manufacturing heptamethine cyanine dyes used in bioimaging and diagnostics.
• Optical Data Storage Media: Used in the formulation of recording layers for high-density optical discs.
• Photographic Sensitizers: Acts as a spectral sensitizer for silver halide emulsions in specialized photographic films.
• Dye-Sensitized Solar Cells (DSSCs): Employed in the development of light-harvesting sensitizers to improve photovoltaic efficiency.
• Laser and Nonlinear Optical Materials: A building block for organic compounds with applications in laser dyes and photonic devices.
• Bioconjugation and Probe Development: Used to create fluorescent labels and probes for in vitro and in vivo biological sensing.

Basic Information

Product Name	2-[[3-(2-Carboxyethyl)-3H-Benzothiazol-2-Ylidene]Methyl]-1-Ethylquinolinium Iodide
CAS No.	50378-82-0
Molecular Formula	C22H21IN2O2S
Molecular Weight	504.38 g/mol
Synonyms	1-Ethyl-2-[(3-(2-carboxyethyl)-2(3H)-benzothiazolylidene)methyl]quinolinium Iodide; Quinolinium, 2-[2-[3-(2-carboxyethyl)-2(3H)-benzothiazolylidene]ethylidene]-1-ethyl-, iodide; Cyanine dye intermediate; NIR dye precursor; Benzothiazolium quinolinium salt; Heptamethine cyanine dye intermediate; 1-Ethyl-2-[(E)-2-(3-ethyl-2(3H)-benzothiazolylidene)ethylidene]quinolinium Iodide derivative
EINECS	Contact for details

Quality Control

Our production of 2-[[3-(2-Carboxyethyl)-3H-Benzothiazol-2-Ylidene]Methyl]-1-Ethylquinolinium Iodide adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for sensitive applications. Each lot is characterized by advanced analytical techniques including HPLC, NMR, and mass spectrometry. Comprehensive Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided to support your quality assurance and regulatory needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent degradation from atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	Dark green to brownish-green crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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