Description

4-[4-[2-(1-Ethylnaphtho[1,2-D]Thiazol-2(3H)-Ylidene)-1-Methylethylidene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid is a high-purity, functionalized organic compound featuring a complex heterocyclic structure that serves as a key intermediate for advanced material synthesis. This compound is valued for its precise molecular architecture, which enables the development of specialized dyes, pigments, and functional polymers with tailored optical and electronic properties. It is primarily sought by R&D laboratories and manufacturers in the specialty chemicals, advanced material science, and high-performance dye industries for creating next-generation products.

Application

• Key Intermediate for Functional Dyes & Pigments: Serves as a critical building block in the synthesis of specialized naphthothiazole-based dyes for textiles, inks, and coatings.
• Advanced Material Synthesis: Used in the research and development of organic semiconductors, photoconductive materials, and non-linear optical (NLO) materials.
• Research Chemical: Employed in academic and industrial R&D for studying structure-property relationships in complex heterocyclic systems.
• Specialty Polymer Additive: Can be incorporated as a functional monomer or additive to impart specific light-absorbing or charge-transfer properties to polymers.
• Analytical Reagent Development: Potential use in developing chemosensors or diagnostic reagents due to its distinct chromophoric structure.

Basic Information

Product Name	4-[4-[2-(1-Ethylnaphtho[1,2-D]Thiazol-2(3H)-Ylidene)-1-Methylethylidene]-4,5-Dihydro-3-Methyl-5-Oxo-1H-Pyrazol-1-Yl]Benzenesulphonic Acid
CAS No.	29637-18-1
Molecular Formula	C26H23N3O4S2
Molecular Weight	505.61 g/mol
Synonyms	Benzenesulfonic acid, 4-[4-[2-(1-ethyl-1,3-dihydro-2H-naphtho[1,2-d]thiazol-2-ylidene)-1-methylethylidene]-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl]-; 1-Ethyl-2-((E)-3-methyl-1-(4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazol-4-ylidene)methyl)naphtho[1,2-d]thiazol-3-ium; Naphtho[1,2-d]thiazolium derivative; Functionalized naphthothiazole sulfonic acid; Pyrazolone-naphthothiazole dye intermediate. Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity for sensitive synthesis applications. Identity and purity are confirmed through a combination of modern analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing all specification parameters 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 area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed immediately after use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 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.