Description

1,3,3-Trimethyl-2-[2-(2-Methyl-3H-Indol-3-Yl)Vinyl]-3H-Indolium Hydrogen Sulphate is a high-purity cyanine dye salt, a critical functional intermediate in advanced material science. This compound matters for its exceptional photophysical properties, enabling precise light absorption and emission characteristics. It is primarily needed by manufacturers in the optical data storage, laser technology, and specialty chemical synthesis sectors for producing high-performance functional dyes and sensitizers.

Application

• Optical Data Storage Media: A key sensitizer and dye component for recordable CDs, DVDs, and Blu-ray discs.
• Laser Dye & Optical Filters: Used in the formulation of tunable laser dyes and optical filter coatings due to its specific absorption profile.
• Non-Linear Optical (NLO) Materials: Serves as a building block for advanced materials used in photonics and optoelectronics.
• Biomedical Imaging & Staining: Potential application as a fluorescent probe or staining agent in biological research and diagnostics.
• Photopolymerization Initiators: Acts as a photoinitiator or co-initiator in UV-curable inks, coatings, and adhesives.
• Organic Semiconductor Research: Used in the development and study of organic light-emitting diodes (OLEDs) and photovoltaic cells.
• Analytical Chemistry Reagent: Employed as a spectroscopic standard or reagent in analytical method development.

Basic Information

Product Name	1,3,3-Trimethyl-2-[2-(2-Methyl-3H-Indol-3-Yl)Vinyl]-3H-Indolium Hydrogen Sulphate
CAS No.	68845-14-7
Molecular Formula	C22H24N2O4S
Molecular Weight	412.50 g/mol
Synonyms	1,3,3-Trimethyl-2-[(1E)-2-(2-methyl-1H-indol-3-yl)ethenyl]-1H-indolium hydrogen sulfate; 1,3,3-Trimethyl-2-[2-(2-methyl-3H-indol-3-yl)vinyl]-1H-indol-1-ium hydrogen sulfate; Cyanine dye base salt; 2-[2-(2-Methyl-1H-indol-3-yl)vinyl]-1,3,3-trimethyl-3H-indolium hydrogen sulfate; Astrazon Orange G Base; Basic Orange 21 Salt; C.I. 48035; C.I. Basic Orange 21 (Salt Form)
EINECS	Contact for details

Quality Control

Our 1,3,3-Trimethyl-2-[2-(2-Methyl-3H-Indol-3-Yl)Vinyl]-3H-Indolium Hydrogen Sulphate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, minimize exposure during handling.

Specification

Item	Specification
Appearance	Dark green to brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Methanol)	Clear solution

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