Description

2-(2-Chloro-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Cyclopenten-1-Yl)-3-Ethyl-1,3-Benzothiazol-3-Ium Perchlorate is a specialized organic salt belonging to the benzothiazolium cyanine dye family, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is a critical functional material for advanced photonic and electronic applications, where precise optical characteristics are paramount. It is primarily sought by manufacturers and researchers in the fields of optical data storage, laser technology, and non-linear optics.

Application

• Optical Data Storage Media: A key component in the formulation of recordable (R) and rewritable (RW) optical discs (e.g., CD-R, DVD±R) as a light-absorbing layer.
• Laser Dye & Optical Limiting: Used as a saturable absorber or gain medium in tunable dye lasers and for optical limiting devices to protect sensors from intense light pulses.
• Non-Linear Optical (NLO) Materials: Incorporated into polymers and crystals for applications in frequency doubling, electro-optic modulation, and optical switching due to its high molecular hyperpolarizability.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer candidate for cancer treatment, leveraging its ability to generate reactive oxygen species upon light irradiation.
• Chemical Sensors: Utilized in the development of fluorescence-based sensors for detecting specific ions or molecules based on changes in its emission properties.
• Organic Photovoltaic (OPV) Research: Serves as an electron acceptor or active layer material in research focused on improving the efficiency of solar cells.

Basic Information

Item	Details
Product Name	2-(2-Chloro-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Cyclopenten-1-Yl)-3-Ethyl-1,3-Benzothiazol-3-Ium Perchlorate
CAS No.	485403-51-8
Molecular Formula	C25H24Cl2N2O4S2
Molecular Weight	551.50 g/mol
Synonyms	NK-2016; 2-(2-Chloro-3-(3-ethyl-2(3H)-benzothiazolylidene)-1-cyclopenten-1-yl)-3-ethylbenzothiazolium perchlorate; Benzothiazolium, 2-[2-chloro-3-(3-ethyl-2(3H)-benzothiazolylidene)-1-cyclopenten-1-yl]-3-ethyl-, perchlorate; Cyanine dye NK-2016; NIR absorbing dye; Heptamethine cyanine dye derivative; Optical recording dye 485403-51-8
EINECS	Contact for details

Quality Control

Every batch of our 2-(2-Chloro-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Cyclopenten-1-Yl)-3-Ethyl-1,3-Benzothiazol-3-Ium Perchlorate is synthesized and purified under controlled conditions to ensure high optical purity and batch-to-batch consistency. Our quality assurance protocol includes comprehensive analytical testing via HPLC, NMR, and UV-Vis-NIR spectroscopy to verify identity, strength, and the absence of critical impurities. A detailed Certificate of Analysis (COA) documenting all test results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its perchlorate salt nature and light-sensitive properties, keep away from heat, sparks, open flames, and incompatible materials such as strong reducing agents and combustible substances.

Specification

Item	Specification
Appearance	Dark green to black crystalline powder
Identification (HPLC)	Retention time corresponds to reference standard
Identification (UV-Vis)	λmax conforms to reference
Purity (HPLC, Area %)	≥ 98.0%
Moisture Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Specific Absorption	Provided on COA

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