Description

5-Chloro-2-[2-(2-chloro-3-{2-[5-chloro-1-(2-methoxy-ethyl)-3,3-dimethyl-1,3-dihydro-indol-2-ylidene]-ethylidene}-cyclohex-1-enyl)-vinyl]-1-(2-methoxy-ethyl)-3,3-dimethyl-3H-indolium 4-methylbenzenesulfonate is a high-purity, functional organic salt belonging to the cyanine dye family, specifically a heptamethine indocyanine dye derivative. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical advanced intermediate for specialized applications. It is primarily sought by manufacturers in the life sciences, optical materials, and high-tech electronics sectors for its role in creating sophisticated functional materials.

Application

• NIR Fluorescent Dye Synthesis: A key precursor for synthesizing heptamethine cyanine dyes used in bioimaging, flow cytometry, and in vivo diagnostics.
• Optical Sensing Probes: Used in the development of chemical sensors and biosensors that operate in the near-infrared spectrum to minimize background interference.
• Photodynamic Therapy (PDT) Agents: Serves as a building block for photosensitizers in medical research for targeted cancer therapies.
• Non-Linear Optical Materials: Employed in research and production of materials for optical data storage, switching, and telecommunications.
• Laser Dye and Optical Filter Manufacturing: Used to formulate dyes for tunable lasers and to create specific optical filters.
• Solar Cell Research: Investigated as a component in dye-sensitized solar cells (DSSCs) and organic photovoltaics due to its light-harvesting properties.
• Security Inks and Taggants: Utilized in high-security printing and anti-counterfeiting measures because of its unique spectral signature.

Basic Information

Product Name	5-Chloro-2-[2-(2-chloro-3-{2-[5-chloro-1-(2-methoxy-ethyl)-3,3-dimethyl-1,3-dihydro-indol-2-ylidene]-ethylidene}-cyclohex-1-enyl)-vinyl]-1-(2-methoxy-ethyl)-3,3-dimethyl-3H-indolium 4-methylbenzenesulfonate
CAS No.	406195-26-4
Molecular Formula	C41H47Cl2N2O5S
Molecular Weight	766.78 g/mol
Synonyms	IR-780 Tosylate; Heptamethine indocyanine dye derivative; 5-Chloro-2-[2-(2-chloro-3-{2-[5-chloro-1-(2-methoxyethyl)-3,3-dimethylindolin-2-ylidene]ethylidene}cyclohex-1-en-1-yl)vinyl]-1-(2-methoxyethyl)-3,3-dimethyl-3H-indol-1-ium 4-methylbenzenesulfonate; NIR-780 Tosylate Salt; Cy7.5 dye analogue; 1-(2-Methoxyethyl)-2-[(1E,3E,5E)-5-(1-(2-methoxyethyl)-3,3-dimethyl-5-chloro-2-indolinylidene)-1,3-pentadien-1-yl]-3,3-dimethyl-5-chloro-3H-indolium p-toluenesulfonate; IR-780 p-toluenesulfonate; 406195-26-4
EINECS	Contact for details

Quality Control

This high-value specialty chemical is produced under strict quality control protocols to ensure batch-to-batch consistency and performance reliability. Our quality system includes comprehensive analytical characterization using HPLC, NMR, and mass spectrometry to verify chemical identity and purity. A detailed Certificate of Analysis (COA) documenting purity, spectral data, and impurity profiles is provided with each shipment to support your R&D and quality assurance processes.

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 tightly sealed in a desiccated environment and handled under low-light conditions to maintain stability.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (HPLC)	Retention time corresponds to reference standard
Identification (IR)	Spectrum matches reference
Purity (HPLC, Area %)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Specific Absorption (λ max)	Contact for details

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