Description

5-CHLORO-2-((3-[(E)-3-(3-([5-CHLORO-3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]METHYL)-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)-1-PROPENYL]-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)METHYL)-3-ETHYL-1,3-BENZOTHIAZOL-3-IUM IODIDE is a high-purity, synthetic organic salt belonging to the cyanine dye family, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is a critical functional material for advanced optical and electronic applications, where precise photophysical characteristics are paramount. It is primarily sought by manufacturers and research institutions in the fields of optical data storage, laser technology, bioimaging, and as a sensitizer for photodynamic therapy.

Application

• Optical Data Storage Media: Used as a key dye component in recordable CD-R and DVD-R discs due to its specific light absorption profile.
• Laser Dyes & Optical Filters: Serves as a gain medium in tunable dye lasers and in the formulation of sharp-cut optical filters.
• Bioimaging & Medical Diagnostics: Employed as a fluorescent probe or tag in NIR fluorescence imaging for deep-tissue analysis.
• Photodynamic Therapy (PDT): Acts as a photosensitizer that generates reactive oxygen species upon light activation for targeted cancer treatment.
• Non-Linear Optics (NLO): Utilized in the development of materials for frequency doubling, optical switching, and signal modulation.
• Solar Energy & Photovoltaics: Investigated for use in dye-sensitized solar cells (DSSCs) to enhance light harvesting efficiency.
• Analytical Chemistry: Functions as a staining agent or a complexometric indicator in specific spectrophotometric methods.
• Security Inks & Taggants: Incorporated into inks for anti-counterfeiting applications due to its unique spectral signature.

Basic Information

Product Name	5-CHLORO-2-((3-[(E)-3-(3-([5-CHLORO-3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]METHYL)-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)-1-PROPENYL]-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)METHYL)-3-ETHYL-1,3-BENZOTHIAZOL-3-IUM IODIDE
CAS No.	108626-72-8
Molecular Formula	C39H43Cl2IN2S2
Molecular Weight	809.68 g/mol
Synonyms	DTTC Iodide; 1,1',3,3,3',3'-Hexamethyl-4,4',5,5'-dibenzo-11-chloro-10,12-diethylindotricarbocyanine Iodide; DTTCI; DTTC I; IR-125; Cryptocyanine derivative; NIR Cyanine Dye; 3H-Indolium, 2-[5-[3-[3-(2,5-dichloro-3-ethyl-1,3-benzothiazol-3-ium-2-yl)prop-2-en-1-ylidene]-5,5-dimethylcyclohex-2-en-1-ylidene]prop-1-en-1-yl]-5-chloro-3-ethyl-1,3-benzothiazol-3-ium, iodide
EINECS	Contact for details

Quality Control

We supply 5-CHLORO-2-((3-[(E)-3-(3-([5-CHLORO-3-ETHYL-1,3-BENZOTHIAZOL-2(3H)-YLIDENE]METHYL)-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)-1-PROPENYL]-5,5-DIMETHYL-2-CYCLOHEXEN-1-YLIDENE)METHYL)-3-ETHYL-1,3-BENZOTHIAZOL-3-IUM IODIDE in high-purity grades suitable for research and industrial applications. Our products undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with customer specifications. Key parameters such as absorbance maxima, fluorescence quantum yield, and impurity profiles are strictly monitored. Certificates of Analysis (COA) detailing purity, identity, and performance characteristics are available upon request.

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) and light-sensitive; therefore, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) when not in use to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area %)
λmax (Absorption)	760 - 780 nm (in Methanol)
ε (Molar Absorptivity)	≥ 2.0 x 105 L·mol-1·cm-1
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.5 %

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