Description

2-[3-(3-Ethyl-2(3H)-Benzothiazolylidene)-2-Methyl-1-Propenyl]-3-[3-(Sulfooxy)-Butyl]Benzothiazolium Hydroxide, Inner Salt is a specialized benzothiazolium-based dye intermediate with a complex, functionalized structure. This compound matters for its role as a key precursor in the synthesis of advanced cyanine and polymethine dyes, which are valued for their intense color and photophysical properties. It is primarily needed by manufacturers in the imaging, photographic, and specialty chemical sectors for producing high-performance colorants and sensitizers.

Application

• Cyanine Dye Synthesis: A critical intermediate for manufacturing near-infrared (NIR) and infrared-sensitive cyanine dyes.
• Photographic Sensitizers: Used in the production of silver halide photographic emulsions to enhance spectral sensitivity.
• Optical Data Storage: Serves as a precursor for dyes used in recordable CDs (CD-R) and DVDs.
• Laser and Nonlinear Optics: Building block for dyes utilized in laser technology and nonlinear optical materials.
• Biomedical Imaging Probes: Intermediate in the development of fluorescent labels and probes for bioanalytical applications.
• Textile and Inkjet Dyes: Used to create specialized, high-stability colorants for niche textile and ink formulations.

Basic Information

Product Name	2-[3-(3-Ethyl-2(3H)-Benzothiazolylidene)-2-Methyl-1-Propenyl]-3-[3-(Sulfooxy)-Butyl]Benzothiazolium Hydroxide, Inner Salt
CAS No.	28789-08-4
Molecular Formula	C24H26N2O4S2
Molecular Weight	470.60 g/mol
Synonyms	Benzothiazolium, 2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]-3-(3-sulfobutyl)-, inner salt; 3-(3-Sulfobutyl)-2-[3-(3-ethyl-2(3H)-benzothiazolylidene)-2-methyl-1-propenyl]benzothiazolium hydroxide, inner salt; Cyanine dye intermediate; Sulfo-butyl-benzothiazolium dye precursor; 28789-08-4 (CAS); Inner salt of a benzothiazolium sulfonate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity suitable for sensitive synthesis. Quality is verified through comprehensive analytical methods including HPLC, NMR, and mass spectrometry. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is light-sensitive and should be handled under appropriate conditions to prevent degradation. Keep the container tightly sealed in a dry environment to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark green to blue-black crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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