Description

2-[2-(2,3-Dihydro-2-Methyl-1H-Indol-1-Yl)Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate is a specialized cationic indole derivative, a key intermediate in the synthesis of advanced functional dyes and pigments. This compound matters for its role in producing materials with specific optical and electronic properties, such as near-infrared absorption and fluorescence. Industries requiring high-performance colorants, including optical data storage, laser printing, and specialty textile dyeing, rely on this precise chemical building block.

Application

• Synthesis of Cyanine Dyes: A crucial precursor for manufacturing heptamethine cyanine dyes used in bioimaging and medical diagnostics.
• Optical Recording Media: Key intermediate for dyes applied in recordable CDs (CD-R) and DVDs, where specific light absorption is critical.
• Laser Technology: Used in the production of dyes for tunable dye lasers and optical filters.
• Non-Linear Optical Materials: Serves as a building block for organic compounds with applications in photonics and electro-optics.
• Textile and Polymer Dyeing: Intermediate for developing specialized cationic dyes for synthetic fibers like polyacrylonitrile.
• Sensitizers in Photography: Used in the chemical synthesis of spectral sensitizers for photographic emulsions.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new organic semiconductors and fluorescent probes.

Basic Information

Item	Details
Product Name	2-[2-(2,3-Dihydro-2-Methyl-1H-Indol-1-Yl)Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate
CAS No.	83949-79-5
Molecular Formula	C23H28N2O4S
Molecular Weight	428.54 g/mol
Synonyms	1,3,3-Trimethyl-2-[2-(2-methyl-2,3-dihydro-1H-indol-1-yl)vinyl]-3H-indolium hydrogen sulfate; 2-[2-(2-Methyl-2,3-dihydro-1H-indol-1-yl)vinyl]-1,3,3-trimethyl-3H-indolium hydrogen sulfate; 1,3,3-Trimethyl-2-[2-(2-methylindolin-1-yl)vinyl]indolium hydrogen sulfate; Cyanine dye intermediate; Heptamethine cyanine precursor; Indolenine cyanine salt; NK-2016 intermediate; IR-125 related intermediate
EINECS	Contact for details

Quality Control

Our production of 2-[2-(2,3-Dihydro-2-Methyl-1H-Indol-1-Yl)Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity for sensitive applications. All materials undergo rigorous analytical testing, including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles 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, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, handling should be conducted under subdued lighting where practical.

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)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%

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