Description

2-Methyl-3-(3-Sulfonatopropyl)Naphtho[2,1-D]Thiazol-3-Ium CAS NO 67892-65-3 is a specialized, sulfonated naphthothiazolium dye intermediate, characterized by its water-solubilizing sulfonate group. This compound matters for its role as a key precursor in the synthesis of functional dyes and fluorescent markers, offering enhanced solubility and stability for downstream applications. It is primarily needed by manufacturers in the dye and pigment, analytical chemistry, and biomedical research sectors seeking high-purity intermediates for advanced material development.

Application

• Synthesis of Functional Dyes: A crucial building block for creating water-soluble cationic dyes, particularly cyanine and styryl dyes, used in textile and polymer coloration.
• Fluorescent Probe Manufacturing: Serves as a core structure for developing fluorescent labels and sensors in bioimaging and diagnostic assays.
• Photographic Sensitizers: Used in the formulation of spectral sensitizers for silver halide photographic emulsions.
• Laser Dye Intermediates: A precursor for dyes utilized in tunable dye lasers and optical recording media.
• Nonlinear Optical Materials: Potential use in the research and development of organic materials for photonic applications.
• Bioconjugation Chemistry: The reactive iminium moiety allows for conjugation with biomolecules for targeted imaging applications.

Basic Information

Product Name	2-Methyl-3-(3-Sulfonatopropyl)Naphtho[2,1-D]Thiazol-3-Ium
CAS No.	67892-65-3
Molecular Formula	C₁₅H₁₅NO₃S₂
Molecular Weight	321.41 g/mol
Synonyms	2-Methyl-3-(3-sulfopropyl)naphtho[2,1-d]thiazol-3-ium; 3-(2-Methylnaphtho[2,1-d]thiazol-3-ium-3-yl)propane-1-sulfonate; SPNT; Naphtho[2,1-d]thiazolium, 2-methyl-3-(3-sulfopropyl)-, inner salt; 2-Methyl-3-(3-sulfopropyl)benzo[de]thiazol-3-ium; Water-soluble naphthothiazolium dye intermediate
EINECS	Contact for details

Quality Control

Our production of 2-Methyl-3-(3-Sulfonatopropyl)Naphtho[2,1-D]Thiazol-3-Ium adheres to stringent in-process controls to ensure batch-to-batch consistency and high chemical purity. Products undergo rigorous quality testing, including chromatographic purity analysis and identity confirmation, to meet exacting customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect stability and performance.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.