Description

2-[2-[2-Chloro-3-[2-(1,3-Dihydro-1,1,3-Trimethyl-2H-Benz[E]Indol-2-Ylidene)Ethylidene]-1-Cyclohexen-1-Yl]Ethenyl]-1,1,3-Trimethyl-1H-Benz[E]Indolium Chloride is a high-purity, functional cyanine dye salt with a distinct polymethine structure. This compound is valued for its strong near-infrared (NIR) absorption and fluorescence properties, making it a critical component in advanced optical and electronic applications. It is primarily utilized by research institutions and industrial manufacturers specializing in photonics, imaging, and material science.

Application

• NIR Fluorescent Probes & Labels: Used in bioimaging, medical diagnostics, and flow cytometry for deep-tissue penetration and low background signal.
• Optical Data Storage: Serves as a recording medium in high-density optical disks and other data storage technologies.
• Laser Dyes & Optical Filters: Employed in tunable dye lasers and as an active medium in NIR optical filters and shutters.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for cancer treatment due to its light-absorbing characteristics.
• Non-Linear Optical (NLO) Materials: A key intermediate in the synthesis of organic materials for photonics, including optical limiters and switches.
• Sensor Development: Incorporated into chemical sensors and biosensors for detecting specific analytes based on fluorescence quenching or enhancement.
• Solar Cell Research: Used in the development of dye-sensitized solar cells (DSSCs) and organic photovoltaics to broaden light absorption spectra.
• Academic & Industrial R&D: A vital building block for synthetic chemists and material scientists exploring new functional dyes and chromophores.

Basic Information

Item	Details
Product Name	2-[2-[2-Chloro-3-[2-(1,3-Dihydro-1,1,3-Trimethyl-2H-Benz[E]Indol-2-Ylidene)Ethylidene]-1-Cyclohexen-1-Yl]Ethenyl]-1,1,3-Trimethyl-1H-Benz[E]Indolium Chloride
CAS No.	297173-98-9
Molecular Formula	C37H40ClN2+ • Cl-
Molecular Weight	579.09 g/mol (cation)
Synonyms	IR-780 Iodide Analog (Chloride Salt); Cyanine Dye IR-780 Chloride; 1,1,3,3,1',1',3',3'-Octamethyl-4,4',5,5'-dibenzo-2,2'-indotricarbocyanine Chloride; NIR-780 Chloride; 2-[2-[2-Chloro-3-[(1E,3E)-2-(1,1,3-trimethyl-1,3-dihydro-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,1,3-trimethyl-1H-benz[e]indolium Chloride; Heptamethine Cyanine Dye Chloride Salt; Benz[e]indolium, 2-[2-[2-chloro-3-[(1E,3E)-2-(1,1,3-trimethyl-1,3-dihydro-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,1,3-trimethyl-, chloride (1:1)
EINECS	Contact for details

Quality Control

Our production of this specialty cyanine dye adheres to stringent Good Manufacturing Practice (GMP) principles for non-pharmaceutical intermediates. Every batch is characterized using advanced analytical techniques including HPLC, NMR, and Mass Spectrometry to confirm structural identity and purity. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and spectral data is provided with each shipment to ensure traceability and meet the exacting requirements of research and high-tech manufacturing.

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; containers must be kept sealed in a desiccated environment to prevent degradation. For long-term storage, consider inert atmosphere packaging.

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)	≥ 95.0%
λmax (Absorption)	780 ± 5 nm (in methanol)
Moisture 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.