Description

5,6-DICHLORO-2-(3-(5,6-DICHLORO-1-ETHYL-3-(3-SULFOPROPYL)-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-YLIDENE)-1-PROPENYL)-1-ETHYL-3-(3-SULFOPROPYL)-1H-BENZIMIDAZOLIUM INNER SALT 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 engineered for applications requiring precise photophysical characteristics and excellent aqueous solubility due to its sulfopropyl and inner salt structure. It is a critical component for researchers and manufacturers in the biotechnology, medical diagnostics, and advanced materials sectors.

Application

• Fluorescent Labeling and Probes: Used as a NIR fluorescent tag for biomolecules (antibodies, proteins, nucleic acids) in immunoassays, flow cytometry, and in vivo imaging due to its deep tissue penetration and low background interference.
• Optical Imaging Agents: Serves as a key chromophore in the development of contrast agents for non-invasive medical imaging techniques, including optical coherence tomography and fluorescence-guided surgery.
• Photodynamic Therapy (PDT): Investigated as a potential photosensitizer for cancer treatment, where its absorption profile can be tuned to activate therapeutic effects with specific light wavelengths.
• Laser Dyes and Optical Materials: Employed in the formulation of tunable dye lasers and as a dopant in the creation of advanced polymeric materials for photonic and sensor applications.
• Chemical Sensors: Utilized in the design of selective chemosensors and biosensors, where changes in its fluorescence signal indicate the presence of specific analytes or environmental conditions.
• Industrial Research & Development: Acts as a standard or intermediate in R&D for novel functional dyes, organic semiconductors, and energy transfer systems.

Basic Information

Product Name	5,6-DICHLORO-2-(3-(5,6-DICHLORO-1-ETHYL-3-(3-SULFOPROPYL)-1,3-DIHYDRO-2H-BENZIMIDAZOL-2-YLIDENE)-1-PROPENYL)-1-ETHYL-3-(3-SULFOPROPYL)-1H-BENZIMIDAZOLIUM INNER SALT SODIUM SALT
CAS No.	28272-54-0
Molecular Formula	C30H32Cl4N4Na2O6S2
Molecular Weight	806.48 g/mol
Synonyms	IR-786; Benz[cd]indolium, 2-[3-[1,3-dihydro-5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-2H-benzimidazol-2-ylidene]-1-propenyl]-5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-, inner salt, sodium salt; 5,6-Dichloro-2-[3-(5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-1,3-dihydro-2H-benzimidazol-2-ylidene)-1-propenyl]-1-ethyl-3-(3-sulfopropyl)-1H-benzimidazolium hydroxide inner salt sodium salt; NIR Cyanine Dye IR-786; Heptamethine cyanine dye IR-786; 1H-Benzimidazolium, 5,6-dichloro-2-[3-(5,6-dichloro-1-ethyl-3-(3-sulfopropyl)-2,3-dihydro-1H-benzimidazol-2-ylidene)-1-propenyl]-1-ethyl-3-(3-sulfopropyl)-, hydroxide, inner salt, sodium salt
EINECS	Contact for details

Quality Control

Our production of this specialty cyanine dye adheres to strict quality management protocols to ensure batch-to-batch consistency and performance reliability for critical applications. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to verify identity, purity, and photophysical properties. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment. We support compliance with research and GMP-grade material requirements upon request.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed in a dry environment to prevent degradation. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (HPLC)	Conforms to reference standard
Identification (UV-Vis)	Conforms (λmax ~786 nm in methanol)
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 5.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 1.0 %
Solubility (1% in Water)	Clear, dark green solution

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