Description

2-[2-[4-[(2-Cyanoethyl)Ethylamino]-o-Tolyl]Vinyl]-1,3,3-Trimethyl-3H-Indolium Dihydrogen Phosphate is a specialized cyanine dye salt, a high-purity intermediate critical for advanced photonic and electronic applications. Its value lies in its precise molecular structure, which provides excellent photosensitivity and stability for demanding technical processes. This compound is essential for manufacturers and R&D facilities in the optical data storage, laser dye, and non-linear optical material sectors, where consistent quality and reliable supply are paramount.

Application

• Optical Data Storage Media: A key sensitizer/photochromic component for high-density recordable optical discs (CD-R, DVD-R).
• Laser Dye Precursor: Used in the synthesis of near-infrared (NIR) absorbing cyanine dyes for tunable dye lasers and laser marking.
• Non-Linear Optical (NLO) Materials: Serves as a building block for organic crystals and polymers with second- or third-order optical non-linearity.
• Biomedical Imaging: Potential use as a precursor for developing NIR fluorescent probes and labels for bioassays and cellular imaging.
• Photopolymerization Initiator Systems: Functions as a photoinitiator or co-initiator in UV-curable inks, coatings, and photoresists.
• Security Printing & Anti-Counterfeiting: Employed in the formulation of inks with specific, hard-to-replicate optical properties for banknotes and secure documents.

Basic Information

Item	Detail
Product Name	2-[2-[4-[(2-Cyanoethyl)Ethylamino]-o-Tolyl]Vinyl]-1,3,3-Trimethyl-3H-Indolium Dihydrogen Phosphate
CAS No.	72208-20-9
Molecular Formula	C25H32N3O4P
Molecular Weight	469.52 g/mol
Synonyms	2-[2-[4-[(2-Cyanoethyl)ethylamino]-2-methylphenyl]ethenyl]-1,3,3-trimethyl-3H-indolium dihydrogen phosphate; Cyanine dye phosphate salt; NK-2012 phosphate; IR-absorbing cyanine dye; 1,3,3-Trimethyl-2-[2-[4-[(2-cyanoethyl)ethylamino]-2-methylphenyl]ethenyl]-3H-indolium dihydrogen phosphate; Heptamethine cyanine dye intermediate; Photochromic indolenine dye salt.
EINECS	Contact for details

Quality Control

Our production of this advanced cyanine dye intermediate adheres to strict in-process controls to ensure batch-to-batch consistency and high chemical purity. Quality is verified through comprehensive analytical techniques including HPLC, NMR, and mass spectrometry. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profile is provided with each shipment to support your quality assurance protocols.

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 in a desiccated environment. For long-term storage, consider sealing under an inert atmosphere such as nitrogen or argon to prevent degradation.

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)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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