Description

1H-Benz[e]indolium, 2-[2-[2-chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-, iodide (1:1) is a specialized polymethine dye belonging to the cyanine family, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is critical for advanced applications requiring precise light absorption and emission characteristics. It is primarily utilized by research and development teams in the photonics, optical data storage, and biomedical imaging sectors.

Application

• NIR Fluorescent Probes & Labels: Used in the development of sensitive bioassays, cell imaging, and in vivo diagnostic agents due to its deep tissue penetration and low background interference.
• Optical Data Storage: Serves as a key light-absorbing material in the formulation of recordable media (e.g., CD-R, DVD-R) for high-density information storage.
• Laser Dyes & Photonics: Employed as a gain medium or saturable absorber in tunable dye lasers and other photonic devices operating in the near-infrared spectrum.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for targeted cancer treatments that utilize light to activate therapeutic agents.
• Nonlinear Optical Materials: A component in the synthesis of organic materials for applications in optical limiting, switching, and frequency conversion.
• Sensor Development: Integrated into chemical and biological sensor platforms where its optical properties change in response to specific analytes.

Basic Information

Product Name	1H-Benz[e]indolium, 2-[2-[2-chloro-3-[2-(3-ethyl-1,3-dihydro-1,1-dimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-3-ethyl-1,1-dimethyl-, iodide (1:1)
CAS No.	440670-16-6
Molecular Formula	C39H42ClIN2
Molecular Weight	693.12 g/mol
Synonyms	IR-780 Iodide; 2-[2-[2-Chloro-3-[(1,3-dihydro-1,1,3-trimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-1,1,3-trimethyl-1H-benz[e]indolium iodide; Cyanine dye IR-780; NIR-780; Heptamethine cyanine dye IR-780; 1,1,3-Trimethyl-2-[2-[2-chloro-3-[(1,3-dihydro-1,1,3-trimethyl-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-1H-benz[e]indolium iodide
EINECS	Contact for details

Quality Control

Our 1H-Benz[e]indolium dye is produced under strict quality management protocols. Each batch is characterized and tested to ensure high purity and consistent performance for sensitive optical applications. We provide comprehensive analytical data, including HPLC purity, absorbance/fluorescence spectra, and identity confirmation. Certificates of Analysis (COA) detailing all specifications 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a desiccated environment to prevent degradation. For long-term stability, consider storage under 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
Purity (HPLC)	≥ 95.0% (Area %)
Absorption λmax	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.