Description

[4-[(4-Diethylaminophenyl)-(4-Ethylaminonaphthalen-2-Yl)Methylidene]-1-Cyclohexa-2,5-Dienylidene]-Diethyl-Azanium is a specialized cationic dye intermediate belonging to the polymethine cyanine dye family. This compound is valued for its strong light absorption and fluorescence properties, making it a critical precursor for advanced functional dyes. It is primarily required by manufacturers in the optical data storage, laser technology, and specialty ink sectors, where precise photophysical characteristics are essential.

Application

• Optical Data Storage Media: A key chromophore in the production of recordable (CD-R, DVD-R) and high-capacity optical discs.
• Laser Dyes & Optical Filters: Used in the synthesis of tunable laser dyes and as an active component in optical filter applications.
• Non-Linear Optical (NLO) Materials: Serves as a building block for materials used in photonics, optical switching, and signal processing.
• Bioimaging & Fluorescent Probes: Employed in the development of near-infrared (NIR) fluorescent tags and probes for biological research and diagnostics.
• Security Inks & Dyes: Utilized in high-security printing, such as for banknotes and authentication labels, due to its specific spectral properties.
• Organic Photovoltaic (OPV) Research: Investigated as an electron donor or acceptor material in the development of next-generation solar cells.

Basic Information

Item	Detail
Product Name	[4-[(4-Diethylaminophenyl)-(4-Ethylaminonaphthalen-2-Yl)Methylidene]-1-Cyclohexa-2,5-Dienylidene]-Diethyl-Azanium
CAS No.	61725-40-4
Molecular Formula	C33H39N3
Molecular Weight	477.68 g/mol
Synonyms	4-[(4-Diethylaminophenyl)(4-ethylamino-2-naphthyl)methylene]-2,5-cyclohexadien-1-ylidenediethylammonium; Cyanine dye intermediate 61725-40-4; 4-[Bis(4-diethylaminophenyl)methylene]-2,5-cyclohexadien-1-ylidenediethylammonium derivative; NK-2012 (potential research code); Heptamethine cyanine dye precursor; 1-Ethyl-2-[4-[4-(diethylamino)phenyl]-1,3-butadienyl]-quinolinium derivative; Cationic polymethine dye
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive analytical methods including HPLC for purity, UV-Vis spectroscopy for absorbance profile, and NMR for structural confirmation. A detailed Certificate of Analysis (COA) documenting identity, purity, and key physical properties is provided with every shipment to support your R&D and manufacturing quality systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed in a dry environment to prevent degradation. Long-term storage under inert atmosphere (e.g., nitrogen or argon) is recommended for optimal stability.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0 %
λmax (Absorption Maxima)	750 - 800 nm (in suitable solvent)
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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