Description

3-Ethyl-2-[(E)-3-(3-((E)-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Propenyl)-5,5-Dimethyl-2-Cyclohexen-1-Ylidene)-1-Propenyl]-1,3-Benzothiazol-3-Ium Iodide is a high-purity, functional cyanine dye salt, identified by CAS No. 68339-70-8. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical component in advanced optical applications. It is primarily sought by manufacturers and researchers in the photonics, biomedical imaging, and specialty chemical synthesis sectors.

Application

• NIR Fluorescent Probes & Labels: Used as a key chromophore in the development of fluorescent tags for bioimaging, flow cytometry, and in vivo diagnostics.
• Optical Data Storage: Serves as a light-absorbing material in recordable media (CD-R, DVD-R) due to its specific spectral sensitivity.
• Laser Dyes & Photonics: Employed in the formulation of tunable dye lasers and as an active medium in optical filters and switches.
• Photodynamic Therapy (PDT): Investigated as a potential photosensitizer for targeted cancer treatments, leveraging its light-activated properties.
• Non-Linear Optical Materials: A building block for advanced materials used in telecommunications and optical computing.
• Analytical Chemistry Sensors: Incorporated into chemical sensors and indicators for the detection of specific ions or biomolecules.
• Industrial Colorants: Used in specialized applications requiring high-stability, near-infrared dyes for security inks or coatings.

Basic Information

Item	Details
Product Name	3-Ethyl-2-[(E)-3-(3-((E)-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Propenyl)-5,5-Dimethyl-2-Cyclohexen-1-Ylidene)-1-Propenyl]-1,3-Benzothiazol-3-Ium Iodide
CAS No.	68339-70-8
Molecular Formula	C35H37IN2S2
Molecular Weight	700.71 g/mol
Synonyms	DTTC Iodide; 3,3'-Diethylthiadicarbocyanine Iodide; DTDC Iodide; 1,3,3-Trimethyl-2-[(E)-3-(1,3,3-trimethyl-2-indolinylidene)-1-propenyl]-3H-indolium Iodide (related class); Thiacarbocyanine dye; NIR-797 dye analog; Cyanine dye salt; Astrazon Orange R (related commercial class)
EINECS	Contact for details

Quality Control

Our 3-Ethyl-2-[(E)-3-(3-((E)-3-[3-Ethyl-1,3-Benzothiazol-2(3H)-Ylidene]-1-Propenyl)-5,5-Dimethyl-2-Cyclohexen-1-Ylidene)-1-Propenyl]-1,3-Benzothiazol-3-Ium Iodide is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing including HPLC for purity, UV-Vis/NIR spectroscopy for spectral verification, and elemental analysis. A Certificate of Analysis (COA) detailing identity, purity, and relevant physical data is provided to ensure traceability and compliance with your research or production specifications.

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 product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept tightly sealed in a desiccated environment and handled under low-light conditions to prevent degradation.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax conforms to reference
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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