Description

1,1'-Diethyl-3-Ethyl-3'(Sulfobutyl)-5,5'-Dicyano-Benzimidotrimethinecyanine-Betaine is a specialized cyanine dye derivative, a high-value functional chemical characterized by its unique betaine structure and sulfobutyl chain. 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 primarily needed by manufacturers in the photographic, optical data storage, and biomedical imaging sectors, where precise light interaction is paramount. The product, CAS 109025-88-9, is supplied to meet the stringent purity and consistency demands of these high-tech industries.

Application

• NIR-Sensitive Photographic Emulsions & Films: Acts as a spectral sensitizer to extend the light sensitivity of silver halide emulsions into the near-infrared region.
• Optical Data Storage Media: Used in the formulation of recordable (CD-R, DVD-R) dye layers for high-density data writing and reading.
• Fluorescent Probes & Labels: Serves as a building block for synthesizing fluorescent tags and probes used in bioimaging and diagnostic assays.
• Laser & Nonlinear Optical Materials: Incorporated into dye-doped polymers and crystals for laser gain media and optical limiting applications.
• Solar Energy & Photovoltaics: Investigated for use in dye-sensitized solar cells (DSSCs) due to its light-harvesting capabilities.
• Security Inks & Taggants: Utilized in covert marking and anti-counterfeiting features due to its specific optical signature.

Basic Information

Product Name	1,1'-Diethyl-3-Ethyl-3'(Sulfobutyl)-5,5'-Dicyano-Benzimidotrimethinecyanine-Betaine
CAS No.	109025-88-9
Molecular Formula	C31H35N5O3S
Molecular Weight	557.71 g/mol
Synonyms	1,1'-Diethyl-3-ethyl-3'-(3-sulfopropyl)-5,5'-dicyanobenzimidotrimethinecyanine betaine; Cyanine dye, NIR-797 analogue; Sulfobutyl cyanine dye; Betaine cyanine dye; 3-Ethyl-3'-(3-sulfopropyl)-5,5'-dicyano-1,1'-diethylbenzimidotrimethinecyanine hydroxide, inner salt; NK-597 (potential research code); IR-780 derivative; Heptamethine cyanine dye with sulfonate group.
EINECS	Contact for details

Quality Control

Our production of this high-purity cyanine dye adheres to rigorous quality control protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and key spectral properties is provided with every shipment. We support compliance with relevant ISO 9001 quality management standards for traceability and process control.

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 light-sensitive nature, handling and packaging should be performed under subdued light or amber glass/opaque containers to prevent photodegradation. Keep the container tightly sealed to protect from moisture.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC, Area %)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 1.0%
Absorption Max (λmax)	780 - 800 nm (in suitable solvent)
Extinction Coefficient (ε)	Contact for details

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