Description

2-((1E,3Z)-3-Chloro-5-[1-Ethyl-2(1H)-Quinolinylidene]-1,3-Pentadienyl)-1-Ethylquinolinium 4-Methylbenzenesulfonate is a specialized organic salt belonging to the cyanine dye family, valued for its unique photophysical properties. This compound is critical for applications requiring precise light absorption and emission characteristics in the near-infrared spectrum. It is primarily sought by research institutions and industrial manufacturers in the fields of advanced materials science, optical data storage, and biomedical imaging.

Application

• Optical Data Storage Media: As a key component in recordable optical discs (e.g., CD-R, DVD-R) for its light-absorbing properties during the writing process.
• Laser Dye and Sensitizer: Used in tunable dye lasers and as a photosensitizer in photodynamic therapy research due to its specific wavelength absorption.
• Non-Linear Optical Materials: Incorporated into polymers and crystals for applications in photonics, optical switching, and frequency doubling.
• Biomedical Imaging Probes: Serves as a fluorescent tag or contrast agent in the development of diagnostic assays and in vivo imaging techniques.
• Organic Photovoltaic Research: Investigated as an electron donor or acceptor material in the active layer of organic solar cells.
• Chemical Sensors: Utilized in the fabrication of optochemical sensors for detecting specific ions or gases based on colorimetric or fluorometric changes.

Basic Information

Item	Detail
Product Name	2-((1E,3Z)-3-Chloro-5-[1-Ethyl-2(1H)-Quinolinylidene]-1,3-Pentadienyl)-1-Ethylquinolinium 4-Methylbenzenesulfonate
CAS No.	60684-03-9
Molecular Formula	C₃₃H₃₁ClN₂O₃S
Molecular Weight	571.13 g/mol
Synonyms	1-Ethyl-2-[(1E,3Z)-3-chloro-5-(1-ethyl-1H-quinolin-2-ylidene)penta-1,3-dien-1-yl]quinolin-1-ium 4-methylbenzenesulfonate; Cyanine dye IR-780 related compound; Quinolinium, 2-[3-chloro-5-(1-ethyl-2(1H)-quinolinylidene)-1,3-pentadienyl]-1-ethyl-, 4-methylbenzenesulfonate; 2-[(1E,3Z)-3-Chloro-5-(1-ethyl-1H-quinolin-2-ylidene)penta-1,3-dien-1-yl]-1-ethylquinolin-1-ium 4-methylbenzenesulfonate; IR-780 Tosylate analog; Heptamethine cyanine dye derivative; NK-2014 (research code); Light-absorbing dye 60684-03-9
EINECS	Contact for details

Quality Control

Our production of 2-((1E,3Z)-3-Chloro-5-[1-Ethyl-2(1H)-Quinolinylidene]-1,3-Pentadienyl)-1-Ethylquinolinium 4-Methylbenzenesulfonate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance reliability. Each lot is analyzed for critical parameters including identity, purity, and impurity profile using advanced analytical techniques such as HPLC, NMR, and mass spectrometry. Certificates of Analysis (COA) documenting all test results are provided with every shipment to support your quality assurance and regulatory needs.

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 light-sensitive (store away from light). Keep the container tightly sealed in a dry environment to prevent moisture absorption and decomposition. Store away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%
Single Maximum Unknown Impurity	≤ 1.0%
Solubility	Soluble in DMSO, DMF; sparingly soluble in methanol

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