Description

Hydrogen 5-Chloro-2-[2-[[5-Chloro-3-(4-Sulphonatobutyl)-3H-Benzothiazol-2-Ylidene]Methyl]But-1-Enyl]-3-(4-Sulphonatobutyl)Benzothiazolium is a high-purity, water-soluble cyanine dye derivative, specifically a benzothiazolium salt with sulfonated butyl side chains. This compound matters for its exceptional photostability and strong near-infrared (NIR) absorption and fluorescence properties, making it a critical component in advanced optical applications. It is primarily needed by manufacturers and research institutions in the biotechnology, medical diagnostics, and semiconductor industries for developing sensitive detection systems and functional materials.

Application

• Fluorescent Labeling Agent: Used as a covalent or non-covalent tag for biomolecules (proteins, nucleic acids) in fluorescence microscopy, flow cytometry, and bioassays.
• Optical Imaging Contrast Agent: Employed in the development of probes for in vivo and in vitro near-infrared (NIR) fluorescence imaging due to its deep tissue penetration and low background interference.
• Laser Dye and Optical Sensor Material: Serves as an active medium in tunable dye lasers and as a sensing element in chemical or biological sensors that rely on fluorescence quenching or enhancement.
• Photodynamic Therapy (PDT) Research: Investigated as a potential photosensitizer candidate for cancer treatment, leveraging its ability to generate reactive oxygen species upon light irradiation.
• Non-Linear Optical Material: Utilized in research for fabricating thin films and devices that exploit its properties for optical limiting, switching, and data storage.
• Industrial Colorant for Specialized Applications: Applied in niche areas requiring NIR absorption, such as security inks, optical filters, and functional coatings.

Basic Information

Product Name	Hydrogen 5-Chloro-2-[2-[[5-Chloro-3-(4-Sulphonatobutyl)-3H-Benzothiazol-2-Ylidene]Methyl]But-1-Enyl]-3-(4-Sulphonatobutyl)Benzothiazolium
CAS No.	20904-74-9
Molecular Formula	C34H38Cl2N2O6S3
Molecular Weight	737.82 g/mol
Synonyms	IR-786; IR 786 dye; NIR-786; Benzothiazolium, 5-chloro-2-[2-[(5-chloro-3-(4-sulfobutyl)-2(3H)-benzothiazolylidene)methyl]-1-butenyl]-3-(4-sulfobutyl)-, inner salt; 5-Chloro-2-[2-[(5-chloro-3-(4-sulfobutyl)-2(3H)-benzothiazolylidene)methyl]-1-butenyl]-3-(4-sulfobutyl)benzothiazolium hydroxide, inner salt; Cyanine dye IR-786; Sulfo-cyanine7.5; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our Hydrogen 5-Chloro-2-[2-[[5-Chloro-3-(4-Sulphonatobutyl)-3H-Benzothiazol-2-Ylidene]Methyl]But-1-Enyl]-3-(4-Sulphonatobutyl)Benzothiazolium is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and performance consistency. Certificates of Analysis (COA) detailing key parameters such as assay (HPLC), absorbance/fluorescence maxima, and impurity profiles are provided to guarantee it meets the stringent requirements for research and industrial applications.

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); ensure the container is sealed tightly after each use to prevent absorption of atmospheric moisture. For long-term storage, consider desiccants or an inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
λabs (Absorption Maximum)	786 nm ± 5 nm
λem (Emission Maximum)	808 nm ± 10 nm
Moisture Content (KF)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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