Description

2-((E)-2-(2-(DIPHENYLAMINO)-3-[(E)-2-(1,3,3-TRIMETHYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOPENTEN-1-YL)ETHENYL)-1,3,3-TRIMETHYL-3H-INDOLIUM PERCHLORATE is a high-purity, functional organic salt belonging to the class of cyanine dyes, specifically a heptamethine indocyanine dye derivative. This compound matters for its exceptional photophysical properties, including strong near-infrared (NIR) absorption and fluorescence, making it a critical component in advanced optical applications. It is essential for researchers and manufacturers in the fields of optical data storage, nonlinear optics, photodynamic therapy, and as a sensitizer in dye-sensitized solar cells (DSSCs).

Application

• Optical Data Storage Media: As a key NIR-absorbing dye for high-density recordable (DVD-R, CD-R) and archival optical discs.
• Nonlinear Optical (NLO) Materials: Used in the development of optical limiters, switches, and frequency converters due to its high molecular hyperpolarizability.
• Photodynamic Therapy (PDT) Agents: Serves as a potential photosensitizer for cancer treatment, leveraging its ability to generate reactive oxygen species upon NIR light irradiation.
• Dye-Sensitized Solar Cells (DSSCs): Functions as a light-harvesting sensitizer on semiconductor surfaces to improve photon-to-electron conversion efficiency.
• Laser Dyes & Optical Filters: Employed in tunable dye lasers and as an active medium or filter component for specific NIR wavelength ranges.
• Biomedical Imaging Probes: Utilized in the synthesis of NIR fluorescent labels and contrast agents for deep-tissue imaging.
• Security Inks & Anti-Counterfeiting: Incorporated into inks for security printing due to its distinct optical signature under specific light conditions.
• Academic & Industrial R&D: A crucial reference standard and building block for synthesizing novel functional dyes and exploring new photonic applications.

Basic Information

Item	Details
Product Name	2-((E)-2-(2-(DIPHENYLAMINO)-3-[(E)-2-(1,3,3-TRIMETHYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOPENTEN-1-YL)ETHENYL)-1,3,3-TRIMETHYL-3H-INDOLIUM PERCHLORATE
CAS No.	110992-57-9
Molecular Formula	C49H48ClN3O4
Molecular Weight	778.38 g/mol
Synonyms	IR-125 Perchlorate; Heptamethine Cyanine Dye IR-125; 2-[2-[2-(Diphenylamino)-3-[(1E,3E)-2-(1,3,3-trimethylindolin-2-ylidene)ethylidene]cyclopent-1-en-1-yl]ethenyl]-1,3,3-trimethyl-3H-indol-1-ium perchlorate; 1,3,3-Trimethyl-2-[2-[2-(diphenylamino)-3-[(1E,3E)-2-(1,3,3-trimethyl-2-indolinylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-3H-indolium perchlorate; Cyanine dye IR-125; NIR Dye IR-125; Cryptocyanine dye derivative; 5,5'-Dichloro-3,3'-diethyl-9-phenyl-4,5,4',5'-dibenzo-2,2'-thiatricarbocyanine perchlorate (related trade/older naming convention).
EINECS	Contact for details

Quality Control

Our 2-((E)-2-(2-(DIPHENYLAMINO)-3-[(E)-2-(1,3,3-TRIMETHYL-1,3-DIHYDRO-2H-INDOL-2-YLIDENE)ETHYLIDENE]-1-CYCLOPENTEN-1-YL)ETHENYL)-1,3,3-TRIMETHYL-3H-INDOLIUM PERCHLORATE is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance in sensitive applications. Each lot undergoes comprehensive analytical testing including HPLC for purity, spectroscopic identification (UV-Vis, IR, NMR), and elemental analysis. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment. We can support development projects with research-grade to technical-grade material, with purity levels tailored to your specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its perchlorate salt nature and light-sensitive properties, it should be kept away from heat, sparks, open flames, and incompatible materials such as strong reducing agents and combustible substances. Keep the container tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax: 780 - 800 nm (in methanol)
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 1.0%
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.