Description

5-Methyl-2-(2-((5-Phenyl-3-(4-Sulfobutyl)-2(3H)-Benzoxazolylidene)Methyl)-1-Butenyl)-3-(4-Sulfobutyl)-Benzoxazolium Hydroxide, Inner Salt, Triethylamine Salt is a specialized, high-purity cyanine dye derivative. This compound is valued for its excellent photostability and strong near-infrared (NIR) absorption and fluorescence properties, making it a critical functional material. It is primarily sought after by manufacturers and researchers in the biotechnology, medical diagnostics, and advanced materials sectors for applications requiring precise optical performance.

Application

• Fluorescent Labeling Reagent: Used as a covalent label for proteins, antibodies, and nucleic acids in bioassays and diagnostic kits.
• NIR Imaging Probes: A key component in the synthesis of probes for in vivo and in vitro fluorescence imaging due to its deep tissue penetration and low background interference.
• Optical Data Storage: Serves as a functional dye in the development of advanced optical recording media.
• Laser Dye and Sensitizer: Employed in the formulation of tunable dye lasers and as a photosensitizer in photodynamic therapy research.
• Photovoltaic Materials: Investigated for use in organic solar cells and other light-harvesting devices.
• Analytical Chemistry Standards: Used as a reference standard in chromatographic and spectroscopic method development.

Basic Information

Product Name	5-Methyl-2-(2-((5-Phenyl-3-(4-Sulfobutyl)-2(3H)-Benzoxazolylidene)Methyl)-1-Butenyl)-3-(4-Sulfobutyl)-Benzoxazolium Hydroxide, Inner Salt, Triethylamine Salt
CAS No.	57532-33-9
Molecular Formula	C41H51N3O7S2
Molecular Weight	761.99 g/mol
Synonyms	Cy7 NHS ester analogue; Benzoxazolium, 5-methyl-2-[2-[(5-phenyl-3-(4-sulfobutyl)-2(3H)-benzoxazolylidene)methyl]-1-butenyl]-3-(4-sulfobutyl)-, hydroxide, inner salt, triethylamine salt; NIR Cyanine Dye Derivative; Sulfobutyl Cy7 Triethylamine Salt; Heptamethine Cyanine Dye with Sulfonate Groups; IR-786 related compound; 57532-33-9
EINECS	Contact for details

Quality Control

Our production of this high-value cyanine dye adheres to strict quality management protocols, ensuring batch-to-batch consistency for sensitive applications. Every lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry to confirm identity, purity, and optical properties. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, absorbance/fluorescence maxima, and extinction coefficient is provided with each 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 product is hygroscopic (moisture-sensitive) and light-sensitive; prolonged exposure to air, moisture, or light may degrade performance. For long-term stability, consider storage under an inert atmosphere such as argon or nitrogen.

Specification

Item	Specification
Appearance	Dark green to blue-black solid
Identification (HPLC)	Conforms to reference standard
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Area %)
Water Content (KF)	≤ 2.0 %
Absorption Maxima (λmax)	750 - 780 nm (in suitable solvent)
Extinction Coefficient (ε)	≥ 200,000 L·mol⁻¹·cm⁻¹

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