Description

2-[2-[4-[(2-Cyanoethyl)Methylamino]Phenyl]Vinyl]-1,3,3-Trimethyl-3H-Indolium Methyl Sulphate is a specialized cationic cyanine dye intermediate with significant photophysical properties. This compound matters for its role as a key precursor in synthesizing advanced functional dyes and fluorescent probes used in high-tech applications. Industries such as optical data storage, biomedical imaging, and laser technology require this chemical for its ability to form stable, light-absorbing chromophores.

Application

• Key intermediate for the synthesis of cyanine dyes and near-infrared (NIR) fluorescent probes.
• Production of sensitizing dyes for optical recording media (e.g., CD-R, DVD-R).
• Manufacturing of laser dyes and materials for non-linear optics.
• Research and development of bio-imaging agents and diagnostic markers.
• Formulation of specialty photoinitiators and photopolymerization systems.
• Development of solar cell materials and organic photovoltaics (OPV).
• Used in the creation of electrochromic displays and smart window technologies.

Basic Information

Product Name	2-[2-[4-[(2-Cyanoethyl)Methylamino]Phenyl]Vinyl]-1,3,3-Trimethyl-3H-Indolium Methyl Sulphate
CAS No.	85187-82-2
Molecular Formula	C24H29N3O4S
Molecular Weight	455.57 g/mol
Synonyms	1,3,3-Trimethyl-2-[2-[4-[(2-cyanoethyl)methylamino]phenyl]ethenyl]-3H-indolium methyl sulfate; Cyanine Dye Intermediate 85187-82-2; 3H-Indolium, 2-[2-[4-[(2-cyanoethyl)methylamino]phenyl]ethenyl]-1,3,3-trimethyl-, methyl sulfate; NIR Dye Precursor; Indocyanine Green Related Intermediate; Methylsulfate Salt of a Cyanine Dye Base; Photographic Sensitizer Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening 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%

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