Description

2-((E)-2-(2-Chloro-1-[(E)-2-(1,3,3-Trimethyl-1,3-Dihydro-2H-Indol-2-Ylidene)Ethylidene]-1H-Inden-3-Yl)Ethenyl)-1,3,3-Trimethyl-3H-Indolium Perchlorate is a high-purity, functional organic salt belonging to the cyanine dye family, specifically a heptamethine indocyanine dye derivative. Its core value lies in its exceptional near-infrared (NIR) absorption and fluorescence properties, making it a critical component for advanced optical applications. This compound is essential for researchers and manufacturers in the photonics, biomedical imaging, and optical data storage sectors who require precise and stable NIR chromophores.

Application

• NIR Fluorescent Probes & Labels: Used in the synthesis of biomarkers and contrast agents for deep-tissue biological imaging and diagnostic assays.
• Optical Data Storage: Serves as a key dye material in recordable CD-R and DVD-R media due to its specific light absorption characteristics.
• Laser Technology: Employed as a saturable absorber or gain medium in tunable dye lasers operating in the near-infrared region.
• Nonlinear Optics (NLO): A candidate material for photonic devices, optical limiters, and switches owing to its large molecular polarizability.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer for cancer treatment due to its ability to generate reactive oxygen species upon NIR light irradiation.
• Chemical Sensors: Utilized in the development of selective sensors where its optical properties change upon binding with specific analytes.

Basic Information

Item	Details
Product Name	2-((E)-2-(2-Chloro-1-[(E)-2-(1,3,3-Trimethyl-1,3-Dihydro-2H-Indol-2-Ylidene)Ethylidene]-1H-Inden-3-Yl)Ethenyl)-1,3,3-Trimethyl-3H-Indolium Perchlorate
CAS No.	159824-78-9
Molecular Formula	C37H38ClN2O4Cl
Molecular Weight	653.07 g/mol
Synonyms	IR-125; 1H-Indolium, 2-[2-[2-chloro-1-[2-(1,3,3-trimethyl-2-indolinylidene)ethylidene]-1H-inden-3-yl]ethenyl]-1,3,3-trimethyl-, perchlorate; Heptamethine cyanine dye; NIR-125; Cryptocyanine; 2-[2-[2-Chloro-1-[2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]-1H-inden-3-yl]vinyl]-1,3,3-trimethyl-3H-indolium perchlorate; 1,3,3-Trimethyl-2-[(1E,3E)-4-(1,3,3-trimethylindolin-2-ylidene)buta-1,3-dien-1-yl]-3H-indolium perchlorate (related form)
EINECS	Contact for details

Quality Control

Our production of 2-((E)-2-(2-Chloro-1-[(E)-2-(1,3,3-Trimethyl-1,3-Dihydro-2H-Indol-2-Ylidene)Ethylidene]-1H-Inden-3-Yl)Ethenyl)-1,3,3-Trimethyl-3H-Indolium Perchlorate adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (UV-Vis, NMR, MS), to ensure consistency and compliance with research-grade specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting all critical quality attributes.

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 compound is light-sensitive (store away from light) and hygroscopic (moisture-sensitive). For long-term stability, consider storage under an inert atmosphere such as argon or nitrogen.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax in specified solvent matches reference
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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