Description

3-Ethyl-2-[2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]But-1-Enyl]Benzothiazolium p-Toluenesulphonate is a high-purity organic salt belonging to the benzothiazolium cyanine dye family, valued for its strong near-infrared absorption and fluorescence properties. This compound is critical for applications requiring precise light absorption and emission characteristics in advanced materials and analytical systems. It is primarily utilized by manufacturers and researchers in the photonics, optical data storage, and biomedical imaging sectors.

Application

• Optical Data Storage Media: As a key dye component in recordable CD-R and DVD-R discs for laser writing and reading.
• Laser Technology & Photonics: As a saturable absorber or gain medium in tunable dye lasers operating in the near-infrared region.
• Biomedical Imaging & Diagnostics: As a fluorescent probe or label in bioassays, cell imaging, and diagnostic kits due to its NIR fluorescence.
• Non-Linear Optical (NLO) Materials: As an organic chromophore for developing materials with second- or third-order optical non-linearity for telecommunications and optical computing.
• Solar Energy & Photovoltaics: As a sensitizer in dye-sensitized solar cells (DSSCs) to enhance light harvesting efficiency.
• Security Inks & Anti-Counterfeiting: Utilized in specialty inks for banknotes, certificates, and product authentication due to its unique optical signature.

Basic Information

Product Name	3-Ethyl-2-[2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]But-1-Enyl]Benzothiazolium p-Toluenesulphonate
CAS No.	77737-19-0
Molecular Formula	C29H30N2O3S3
Molecular Weight	550.73 g/mol
Synonyms	3-Ethyl-2-[2-[(3-ethyl-2(3H)-benzothiazolylidene)methyl]-1-butenyl]benzothiazolium p-toluenesulfonate; NK-2014; 3,3'-Diethylthiatricarbocyanine p-Toluenesulfonate; DTTC Iodide analog; 3-Ethyl-2-[2-[(3-ethylbenzothiazolin-2-ylidene)methyl]but-1-en-1-yl]benzothiazol-3-ium 4-methylbenzenesulfonate; Near-IR Cyanine Dye; Thiacarbocyanine Dye Salt
EINECS	Contact for details

Quality Control

Our production of 3-Ethyl-2-[2-[(3-Ethyl-3H-Benzothiazol-2-Ylidene)Methyl]But-1-Enyl]Benzothiazolium p-Toluenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high performance in sensitive applications. Each lot is characterized by advanced analytical techniques including HPLC, NMR, and mass spectrometry to verify identity, purity, and the absence of critical impurities. Certificates of Analysis (COA) documenting all relevant specifications are provided to support your quality assurance and regulatory compliance needs.

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 material is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider using desiccants or an inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Absorption Max (λmax)	760 - 780 nm (in suitable solvent)
Heavy Metals (as Pb)	≤ 20 ppm

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