Description

Hydrogen 1-(3-Sulphonatopropyl)-2-[[1-(3-Sulphonatopropyl)-1H-Quinolin-2-Ylidene]Methyl]Quinolinium, Potassium Salt is a high-purity, water-soluble cyanine dye derivative, valued for its strong near-infrared (NIR) absorption and fluorescence properties. This compound is critical for applications requiring precise optical performance and stability in aqueous environments. It is primarily utilized by manufacturers and researchers in the biotechnology, medical diagnostics, and advanced materials sectors.

Application

• NIR Fluorescent Labeling Agent: Used as a covalent label for proteins, antibodies, and nucleic acids in bioassays and flow cytometry.
• Optical Imaging Probes: A key component in the formulation of contrast agents for in vivo and in vitro fluorescence imaging.
• Photodynamic Therapy (PDT): Investigated as a potential photosensitizer due to its light-absorbing characteristics in therapeutic wavelengths.
• Sensor and Detector Manufacturing: Incorporated into chemical sensors and optical detection systems for environmental and industrial monitoring.
• Advanced Material Synthesis: Serves as a functional monomer or dopant in the development of organic semiconductors and light-harvesting materials.
• Research & Development: A standard reagent in academic and industrial R&D for photophysical studies and new application discovery.

Basic Information

Product Name	Hydrogen 1-(3-Sulphonatopropyl)-2-[[1-(3-Sulphonatopropyl)-1H-Quinolin-2-Ylidene]Methyl]Quinolinium, Potassium Salt
CAS No.	94166-46-8
Molecular Formula	C27H28K2N2O6S2
Molecular Weight	642.91 g/mol
Synonyms	IR-783 Potassium Salt; 1H-Quinolinium, 1-(3-sulfopropyl)-2-((1-(3-sulfopropyl)-1H-quinolin-2(1H)-ylidene)methyl)-, potassium salt (1:2); Potassium 1-(3-sulfonatopropyl)-2-((1-(3-sulfonatopropyl)quinolin-1-ium-2-yl)methylene)quinolin-1-ide; Cyanine dye IR-783; NIR dye 783; 2-[2-[1-(3-Sulfopropyl)quinolin-1-ium-2-yl]vinyl]-1-(3-sulfopropyl)quinolin-1-ium, dipotassium salt
EINECS	Contact for details

Quality Control

Our production of this cyanine dye adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is characterized by advanced analytical techniques including HPLC, NMR, and mass spectrometry to confirm identity, purity, and the absence of critical impurities. A comprehensive Certificate of Analysis (COA) detailing purity, absorbance/fluorescence profiles, and other relevant specifications 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) and must be kept in a desiccated environment to maintain stability and performance. Once opened, containers should be flushed with an inert gas (e.g., nitrogen or argon) and resealed promptly.

Specification

Item	Specification
Appearance	Dark green to blue-black powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Absorption Max (λmax)	783 nm ± 5 nm (in water)
Extinction Coefficient (ε)	≥ 1.8 x 105 M-1cm-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.