Description

2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-3-(3-Sulphonatobutyl)Benzothiazolium is a specialized benzothiazolium dye intermediate, valued for its distinct chromophoric properties and water-solubility imparted by the sulphonatobutyl group. This compound is critical for the synthesis of advanced functional dyes and optical materials, offering precise color tuning and stability. It is primarily needed by manufacturers in the photographic, laser dye, and specialty chemical industries for high-performance applications.

Application

• Synthesis of Cyanine Dyes: A key intermediate for producing near-infrared (NIR) and infrared-sensitive cyanine dyes used in photographic films and digital printing.
• Laser Dye Production: Utilized in the manufacture of tunable laser dyes for scientific, medical, and industrial laser systems.
• Optical Data Storage: Used in the development of materials for optical discs and other advanced data storage media.
• Biomedical Imaging: Serves as a precursor for fluorescent probes and labels in bioanalytical assays and diagnostic imaging.
• Non-linear Optical Materials: Applied in research and development of materials for photonics and optoelectronic devices.
• Textile Dyeing: Employed in the synthesis of specialized, high-fastness dyes for technical textiles.

Basic Information

Item	Details
Product Name	2-[3-(3-Ethyl-3H-Benzothiazol-2-Ylidene)-2-Methylprop-1-Enyl]-3-(3-Sulphonatobutyl)Benzothiazolium
CAS No.	34935-38-1
Molecular Formula	C24H26N2O3S2- (Counter ion typically Na+ or K+)
Molecular Weight	Contact for details
Synonyms	3-(3-Sulphonatobutyl)-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]benzothiazolium; Benzothiazolium, 2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]-3-(3-sulfobutyl)-, inner salt; Cyanine dye intermediate; IR-125 precursor; Sulfoindocyanine dye intermediate; 3H-Benzothiazolium, 2-[3-(3-ethyl-3H-benzothiazol-2-ylidene)-2-methyl-1-propenyl]-3-(3-sulfobutyl)-; Light-sensitive cyanine salt.
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity for sensitive downstream synthesis. Quality is verified through analytical techniques including HPLC, NMR, and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

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 tightly sealed in a low-humidity environment to prevent degradation. For long-term storage, consider desiccants or inert atmosphere.

Specification

Item	Specification
Appearance	Dark green to blue-black powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0% (Standard Grade)
Water Content (KF)	≤ 5.0%
Absorption Maxima (λmax)	Specification available upon request
Heavy Metals (as Pb)	≤ 20 ppm

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