Description

Hydrogen [4-[4-(Diethylamino)-α-(3,6-Disulphonato-1-Naphthyl)Benzylidene]Cyclohexa-2,5-Dien-1-Ylidene]Diethylammonium, Sodium Salt is a high-purity, water-soluble cyanine dye derivative, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is essential for advanced applications requiring precise optical characteristics and excellent photostability. It is primarily sought after by manufacturers and researchers in the biotechnology, medical diagnostics, and optical materials sectors for use as a specialized labeling and sensing agent.

Application

• Fluorescent Labeling Agent: Used as a near-infrared (NIR) fluorescent probe for labeling proteins, antibodies, and nucleic acids in bioassays and diagnostic kits.
• Optical Imaging: Serves as a contrast agent in non-invasive in vivo imaging and biomedical research due to its deep tissue penetration and low background interference.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer in cancer treatment research for its light-activated therapeutic properties.
• Laser Dye & Optical Filters: Employed in the formulation of tunable laser dyes and the manufacturing of specialized optical filters and coatings.
• Sensor Development: A key component in the development of chemical and biological sensors that rely on fluorescence quenching or enhancement.
• Material Science: Incorporated into advanced polymers and nanomaterials to impart specific optical or electronic functionalities.

Basic Information

Product Name	Hydrogen [4-[4-(Diethylamino)-α-(3,6-Disulphonato-1-Naphthyl)Benzylidene]Cyclohexa-2,5-Dien-1-Ylidene]Diethylammonium, Sodium Salt
CAS No.	3369-56-0
Molecular Formula	C37H39N2Na2O6S2
Molecular Weight	716.82 g/mol
Synonyms	IR-783; IR 783 Dye; IR783; NIR Dye IR-783; 2-[2-[2-Chloro-3-[2-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-ethylidene]-1-cyclohexen-1-yl]-ethenyl]-1,3,3-trimethyl-3H-indolium Chloride (related parent compound); Benz[e]indolium, 2-[2-[2-chloro-3-[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1-cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-, chloride (related); Sulfo-Cyanine Dye; Heptamethine Cyanine Dye, Sulfonated; Sodium 4-[4-(Diethylamino)-α-(3,6-disulfonato-1-naphthyl)benzylidene]-N,N-diethyl-2,5-cyclohexadien-1-iminium-1-ide
EINECS	Contact for details

Quality Control

Every batch of our IR-783 dye is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high standards required for research and diagnostic applications. Certificates of Analysis (COA) detailing purity, identity, and performance characteristics (e.g., absorbance/fluorescence maxima, extinction coefficient) are available upon request. Our quality commitment supports compliance with relevant ISO and GMP guidelines for raw materials.

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 dry environment to prevent degradation. For long-term storage, consider desiccated conditions.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Absorbance Maxima	783 nm ± 5 nm (in methanol or water)
Extinction Coefficient (ε)	≥ 200,000 L·mol⁻¹·cm⁻¹
Heavy Metals (as Pb)	≤ 20 ppm

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