Description

Hydrogen 2-(3-(5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulphonatobutyl)-2H-benzimidazol-2-ylidene)-1-propenyl)-1-(3-sulphonatopropyl)naphtho[1,2-d]thiazolium, sodium salt is a high-purity, water-soluble cyanine dye derivative, recognized for its exceptional photostability and strong near-infrared (NIR) absorption/emission properties. This compound is engineered to deliver reliable performance as a key functional component in advanced optical and diagnostic applications. It is primarily utilized by manufacturers in the biotechnology, medical imaging, and analytical chemistry sectors seeking consistent quality for sensitive formulations.

Application

• Fluorescent Labeling Agent: Used as a covalent or non-covalent tag for biomolecules (proteins, nucleic acids) in fluorescence microscopy and flow cytometry.
• Optical Imaging Contrast Agent: A critical component in the development of NIR fluorescent probes for in vivo and in vitro diagnostic imaging.
• Laser Dye and Sensitizer: Employed in tunable dye lasers and as a photosensitizer in photodynamic therapy (PDT) research.
• Photovoltaic and OLED Research: Serves as an active layer material or dopant in research for organic light-emitting diodes (OLEDs) and solar cells due to its electron-transfer properties.
• Analytical Chemistry Reagent: Functions as a sensitive fluorophore in chemical sensors and assays for detecting specific ions or small molecules.
• Industrial Colorant for Specialized Applications: Used in niche applications requiring specific NIR absorption characteristics, such as in security inks or optical filters.

Basic Information

Item	Details
Product Name	Hydrogen 2-(3-(5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulphonatobutyl)-2H-benzimidazol-2-ylidene)-1-propenyl)-1-(3-sulphonatopropyl)naphtho[1,2-d]thiazolium, sodium salt
CAS No.	16470-44-3
Molecular Formula	C34H36Cl2N3NaO6S3
Molecular Weight	788.80 g/mol (as sodium salt)
Synonyms	IR-786; IR 786; IR786; NIR-786 Dye; 1-(3-Sulfonatopropyl)-2-[3-[1,3-dihydro-5,6-dichloro-1-ethyl-3-(3-sulfonatobutyl)-2H-benzimidazol-2-ylidene]-1-propenyl]naphtho[1,2-d]thiazolium Hydroxide, Inner Salt, Sodium Salt; Benzo[cd]indolium, 2-[3-[5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulfonatobutyl)-2H-benzimidazol-2-ylidene]-1-propenyl]-1-(3-sulfonatopropyl)-, inner salt, sodium salt; Cyanine dye IR-786; Heptamethine cyanine dye sulfonate
EINECS	Contact for details

Quality Control

Our production of IR-786 dye adheres to stringent quality protocols to ensure batch-to-batch consistency critical for research and diagnostic applications. Each lot is characterized by advanced analytical techniques including HPLC, NMR, and mass spectrometry to verify identity, purity, and absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing assay, absorbance/fluorescence profiles, and impurity limits is provided with every shipment.

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 material is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent degradation from atmospheric moisture. For long-term storage, consider desiccant or inert atmosphere.

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%
Absorption Max (λmax)	786 nm ± 5 nm (in methanol)
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.