Description

3H-Indolium, 2-[2-[4-[(2-Cyanoethyl)Ethylamino] -2-Methylphenyl]Ethenyl]-1,3,3-Trimethyl -, Sulfate (1:1) is a specialized cationic dye intermediate belonging to the cyanine dye family, valued for its strong light absorption and fluorescence properties. This compound is critical for synthesizing advanced functional dyes with precise photophysical characteristics. It is primarily required by manufacturers in the imaging, optical data storage, and specialty chemical sectors for applications demanding high-purity chromophores.

Application

• Synthesis of Cyanine Dyes: A key precursor for producing near-infrared (NIR) absorbing and fluorescent cyanine dyes used in biological imaging and diagnostics.
• Optical Recording Media: Used in the formulation of dyes for recordable compact discs (CD-R) and digital versatile discs (DVD-R).
• Laser Technology: Acts as a gain medium or saturable absorber in tunable dye lasers due to its specific absorption/emission profile.
• Photodynamic Therapy (PDT): Investigated for the development of photosensitizers in medical treatments targeting cancer cells.
• Non-linear Optical Materials: Serves as a building block for organic materials with applications in photonics and optoelectronics.
• Analytical Chemistry: Employed as a fluorescent probe or tag in sensitive detection assays and sensor technologies.

Basic Information

Product Name	3H-Indolium, 2-[2-[4-[(2-Cyanoethyl)Ethylamino] -2-Methylphenyl]Ethenyl]-1,3,3-Trimethyl -, Sulfate (1:1)
CAS No.	74398-70-2
Molecular Formula	C25H31N3O4S
Molecular Weight	469.60 g/mol
Synonyms	2-[2-[4-[(2-Cyanoethyl)ethylamino]-2-methylphenyl]ethenyl]-1,3,3-trimethyl-3H-indolium sulfate; Cyanine dye intermediate 74398-70-2; 1,3,3-Trimethyl-2-[2-(4-[(2-cyanoethyl)ethylamino]-2-methylphenyl)vinyl]-3H-indolium sulfate; NK-2016 sulfate salt; Heptamethine cyanine derivative; Sulphate salt of a cyanine dye precursor; 3H-Indolium, 1,3,3-trimethyl-2-[2-[4-[(2-cyanoethyl)ethylamino]-2-methylphenyl]ethenyl]-, sulfate (1:1)
EINECS	Contact for details

Quality Control

Our production of this cyanine dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and high chemical purity. Quality is verified through advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your R&D and manufacturing requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light). Keep away from incompatible materials and 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
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm

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