Description

2-[3-Ethoxycarbonyl-4-[3-[3-ethoxycarbonyl-5-oxo-1-(2-sodiosulfobenzyl)-2-pyrazolin-4-ylidene]-1-propenyl]-5-hydroxy-1H-pyrazol-1-ylmethyl]benzenesulfonic acid sodium salt is a high-purity, complex organic dye intermediate and functional chemical. This compound is valued for its precise molecular structure, which serves as a critical building block in the synthesis of advanced colorants and specialty chemicals. It is primarily required by manufacturers in the dyes and pigments, fine chemical synthesis, and advanced material research sectors.

Application

• Key Intermediate for Reactive Dyes: Serves as a crucial precursor in the manufacturing of high-performance reactive dyes for textiles, especially cotton and cellulose fibers.
• Specialty Pigment Synthesis: Used in the production of complex organic pigments requiring specific color properties and lightfastness.
• Fine Chemical Manufacturing: Acts as a building block in multi-step organic synthesis for pharmaceuticals and agrochemical research.
• Functional Dye Production: Employed in creating dyes for non-textile applications such as inks, coatings, and plastics.
• Research & Development: Utilized in academic and industrial R&D labs for developing new chromophores and studying structure-property relationships.

Basic Information

Product Name	2-[3-Ethoxycarbonyl-4-[3-[3-ethoxycarbonyl-5-oxo-1-(2-sodiosulfobenzyl)-2-pyrazolin-4-ylidene]-1-propenyl]-5-hydroxy-1H-pyrazol-1-ylmethyl]benzenesulfonic acid sodium salt
CAS No.	118155-99-0
Molecular Formula	C33H31N4O12S2Na2
Molecular Weight	792.78 g/mol
Synonyms	Benzenesulfonic acid, 2-[[3-(ethoxycarbonyl)-4-[3-[3-(ethoxycarbonyl)-5-oxo-1-[(2-sulfophenyl)methyl]-4,5-dihydro-1H-pyrazol-4-ylidene]-1-propenyl]-5-hydroxy-1H-pyrazol-1-yl]methyl]-, sodium salt (1:2); Reactive Dye Intermediate; Sodium 2-((3-ethoxycarbonyl-4-(3-(3-ethoxycarbonyl-5-oxo-1-(2-sulfobenzyl)-4,5-dihydro-1H-pyrazol-4-ylidene)prop-1-en-1-yl)-5-hydroxy-1H-pyrazol-1-yl)methyl)benzenesulfonate; Bis-sodium salt of a pyrazolone-based sulfonic acid.
EINECS	Contact for details

Quality Control

Our production of 2-[3-Ethoxycarbonyl-4-[3-[3-ethoxycarbonyl-5-oxo-1-(2-sodiosulfobenzyl)-2-pyrazolin-4-ylidene]-1-propenyl]-5-hydroxy-1H-pyrazol-1-ylmethyl]benzenesulfonic acid sodium salt adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity, consistent composition, and batch-to-batch reliability. Comprehensive Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance 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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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