Description

Ir783 CAS NO 115970-66-6 is a high-purity near-infrared (NIR) fluorescent dye belonging to the heptamethine cyanine class. This compound is valued for its strong absorption and emission in the NIR region, which is critical for applications requiring deep tissue penetration and minimal background interference. It is an essential material for researchers and manufacturers in the fields of bioimaging, optical sensing, and photodynamic therapy.

Application

• Biological Imaging & Diagnostics: Used as a fluorescent probe for in vivo and in vitro imaging due to its deep tissue penetration and low autofluorescence.
• Optical Sensor Development: Serves as a key component in the fabrication of sensors for detecting ions, small molecules, and biomolecules.
• Photodynamic Therapy (PDT): Acts as a photosensitizer for cancer treatment, generating reactive oxygen species upon light irradiation.
• Material Science Research: Incorporated into nanoparticles, polymers, and coatings to impart NIR fluorescence properties.
• Dye Laser Applications: Utilized as a gain medium in tunable dye lasers operating in the near-infrared spectrum.
• Non-Destructive Testing (NDT): Applied in industrial inspection and flaw detection systems that utilize NIR fluorescence.

Basic Information

Item	Detail
Product Name	Ir783
CAS No.	115970-66-6
Molecular Formula	C45H45IN2O3S2
Molecular Weight	877.87 g/mol
Synonyms	IR-783; IR 783; IR783; 2-[2-[2-Chloro-3-[(1,3-dihydro-1,1-dimethyl-3-(4-sulfobutyl)-2H-benz[e]indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-1,1-dimethyl-3-(4-sulfobutyl)-1H-benz[e]indolium Hydroxide, Inner Salt; NIR Dye IR-783; Heptamethine Cyanine Dye IR-783; Benz[e]indolium Dye
EINECS	Contact for details

Quality Control

Our Ir783 is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and MS for structural confirmation, and spectrophotometry for optical property verification. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to ensure traceability and compliance with your research or production standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C. This product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to maintain stability and performance. Allow the sealed container to reach room temperature before opening to prevent condensation.

Specification

Item	Specification
Appearance	Dark green to black powder
Identification (HPLC/MS)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Absorption (λmax)	783 ± 5 nm
Emission (λmax)	810 ± 10 nm
Solubility	Soluble in DMSO, DMF, Methanol

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