Description

Hydrogen 5,6-dichloro-2-[3-[5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulphonatobutyl)-2H-benzimidazol-2-ylidene]propen-1-yl]-1-ethyl-3-(3-sulphonatobutyl)-1H-benzimidazolium is a high-purity, water-soluble cyanine dye derivative, specifically a symmetrical heptamethine dye with sulfonate groups for enhanced solubility. This compound matters for its exceptional performance as a near-infrared (NIR) fluorescent probe, offering high molar absorptivity and quantum yield for sensitive detection applications. It is primarily needed by manufacturers and research institutions in the biotechnology, medical diagnostics, and analytical chemistry sectors for labeling, imaging, and sensing.

Application

• Fluorescent Labeling Agent: Used for covalent conjugation to proteins, antibodies, and nucleic acids for bioassays and flow cytometry.
• Near-Infrared (NIR) Imaging Probes: A key component in the development of contrast agents for in vivo fluorescence imaging and surgical guidance.
• Biosensor Development: Employed in the fabrication of optical sensors for detecting ions, small molecules, and enzymatic activity.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer due to its strong light absorption in the therapeutic window.
• Material Science: Incorporated into polymers and nanoparticles to create functional materials with specific optical properties.
• Analytical Reagent: Serves as a standard or a critical reagent in high-performance liquid chromatography (HPLC) and spectrophotometric methods.

Basic Information

Product Name	Hydrogen 5,6-dichloro-2-[3-[5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulphonatobutyl)-2H-benzimidazol-2-ylidene]propen-1-yl]-1-ethyl-3-(3-sulphonatobutyl)-1H-benzimidazolium
CAS No.	3325-10-8
Molecular Formula	C34H40Cl4N4O6S2
Molecular Weight	806.66 g/mol
Synonyms	IR-783; IR 783 dye; NIR-783; Heptamethine cyanine dye IR-783; 1,1',3,3,3',3'-Hexamethyl-4,4',5,5'-dibenzo-2,2'-indotricarbocyanine-7,7'-disulfonate; 2-[2-[2-Chloro-3-[(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1-cyclopenten-1-yl]ethenyl]-1,3,3-trimethyl-3H-indolium chloride (related base structure); Cy7.5 analogue; Sulfo-Cyanine7.5
EINECS	Contact for details

Quality Control

Our hydrogen 5,6-dichloro-2-[3-[5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulphonatobutyl)-2H-benzimidazol-2-ylidene]propen-1-yl]-1-ethyl-3-(3-sulphonatobutyl)-1H-benzimidazolium is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR and mass spectrometry for structural confirmation, and spectrophotometry for optical property verification. Certificates of Analysis (COA) detailing all specifications and test results are provided to ensure traceability and compliance with your research or production requirements.

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 nature, the container must be kept tightly sealed in a dry environment to prevent moisture absorption, which can affect stability and performance. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to structure
Identification (UV-Vis)	λmax: 783 ± 5 nm
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Absorbance Ratio (A783/A~700)	≥ 1.2
Solubility (in Water)	Clear, dark blue solution at 1 mg/mL
Heavy Metals (as Pb)	≤ 20 ppm

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