Description

5-Chloro-3-Ethyl-2-Methylbenzothiazolium p-Toluenesulfonate is a high-purity, specialized benzothiazolium salt used as a critical intermediate and functional material in advanced chemical synthesis. This compound is valued for its role in the development of photosensitizers, dyes, and functional organic materials, where its specific molecular structure imparts desired electronic and photophysical properties. It is essential for research and production in the fields of organic electronics, imaging agents, and specialty chemical manufacturing.

Application

• Photosensitizer Precursor: A key intermediate in the synthesis of cyanine and other polymethine dyes used in photographic and optical applications.
• Functional Dye Synthesis: Serves as a building block for creating sensitizing dyes for silver halide photography and other light-sensitive materials.
• Organic Electronics: Used in the research and development of materials for organic light-emitting diodes (OLEDs) and other optoelectronic devices.
• Biomedical Imaging: Potential application as a precursor for near-infrared (NIR) fluorescent probes and contrast agents.
• Chemical Research: An important reagent in academic and industrial R&D for studying benzothiazolium chemistry and developing novel functional molecules.
• Specialty Chemical Manufacturing: Employed in the production of custom, high-value chemicals for niche industrial and technological applications.

Basic Information

Product Name	5-Chloro-3-Ethyl-2-Methylbenzothiazolium p-Toluenesulfonate
CAS No.	63149-16-6
Molecular Formula	C₁₇H₁₈ClNO₃S₂
Molecular Weight	383.91 g/mol
Synonyms	5-Chloro-3-ethyl-2-methylbenzothiazol-3-ium 4-methylbenzenesulfonate; 2-Methyl-5-chloro-3-ethylbenzothiazolium tosylate; 3-Ethyl-5-chloro-2-methylbenzothiazolium p-toluenesulfonate; Benzothiazolium, 5-chloro-3-ethyl-2-methyl-, salt with 4-methylbenzenesulfonic acid (1:1); Tosylate salt of 5-chloro-3-ethyl-2-methylbenzothiazolium
EINECS	Contact for details

Quality Control

Our production of 5-Chloro-3-Ethyl-2-Methylbenzothiazolium p-Toluenesulfonate adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. The material 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 each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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