Description

5-Chloro-2-Methyl-3-(3-Sulfopropyl)Benzothiazolium, Inner Salt is a specialized benzothiazolium derivative featuring a zwitterionic structure with a built-in sulfopropyl group. This compound matters as a key intermediate and functional building block in advanced organic synthesis, particularly for creating dyes, photosensitizers, and functional polymers. It is primarily needed by R&D chemists and production facilities in the fine chemical, photographic, and specialty materials industries.

Application

• Synthesis of Cyanine Dyes: A crucial precursor for manufacturing heptamethine cyanine dyes and other NIR-absorbing chromophores used in bioimaging and optical materials.
• Photosensitizer Production: Serves as an intermediate in the creation of photosensitizers for applications in photodynamic therapy and photoinitiator systems.
• Functional Polymer Additive: Used to incorporate benzothiazole and sulfonate functionalities into polymers to modify solubility, ionic character, or light-absorbing properties.
• Analytical Reagent Intermediate: Employed in the synthesis of reagents and probes for analytical chemistry and sensor development.
• Liquid Crystal and OLED Materials: Acts as a building block for creating charge-transporting or emissive materials in electronic displays.
• Catalysis Research: Investigated as a ligand or ionic component in catalytic systems and ionic liquids.

Basic Information

Product Name	5-Chloro-2-Methyl-3-(3-Sulfopropyl)Benzothiazolium, Inner Salt
CAS No.	65287-04-9
Molecular Formula	C12H14ClNO3S2
Molecular Weight	319.82 g/mol
Synonyms	3-(3-Sulfopropyl)-5-chloro-2-methylbenzothiazolium, inner salt; 5-Chloro-2-methyl-3-(3-sulfopropyl)benzothiazolium hydroxide, inner salt; 2-Methyl-5-chloro-3-(3-sulfopropyl)benzothiazolium inner salt; Benzothiazolium, 5-chloro-2-methyl-3-(3-sulfopropyl)-, hydroxide, inner salt; SPCC; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 5-Chloro-2-Methyl-3-(3-Sulfopropyl)Benzothiazolium, Inner Salt is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by NMR and IR spectroscopy, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

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

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystals
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95% (Standard Grade)
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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