Description

2,4-Dihydro-4-[(4-Methoxy-2-Nitrophenyl)Azo]-1-[2-Methoxy-5-[[2-(Propionyloxy)Ethyl]Sulphonyl]Phenyl]-5-Methyl-3H-Pyrazol-3-One is a high-purity, synthetic azo pyrazolone derivative designed for advanced industrial applications. This compound serves as a critical functional intermediate, valued for its specific chromophoric and structural properties. It is primarily utilized by manufacturers in the specialty dyes and pigments sector, as well as in research and development for novel materials.

Application

• Disperse Dye Intermediate: A key precursor for synthesizing high-performance disperse dyes used in textile coloration, particularly for polyester and acetate fibers.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics where specific color fastness and stability are required.
• Functional Material Research: Serves as a building block in R&D for advanced materials, including liquid crystals and non-linear optical (NLO) materials.
• Analytical Chemistry: May be employed as a reagent or standard in chromatographic analysis and method development within quality control laboratories.

Basic Information

Product Name	2,4-Dihydro-4-[(4-Methoxy-2-Nitrophenyl)Azo]-1-[2-Methoxy-5-[[2-(Propionyloxy)Ethyl]Sulphonyl]Phenyl]-5-Methyl-3H-Pyrazol-3-One
CAS No.	85409-56-9
Molecular Formula	C23H25N5O8S
Molecular Weight	531.54 g/mol
Synonyms	Disperse Yellow 211; C.I. 127700; 4-[(4-Methoxy-2-nitrophenyl)azo]-1-[2-methoxy-5-[(2-propionyloxyethyl)sulfonyl]phenyl]-5-methyl-1H-pyrazol-3(2H)-one; 1H-Pyrazol-3(2H)-one, 4-[(4-methoxy-2-nitrophenyl)azo]-1-[2-methoxy-5-[(2-propionyloxyethyl)sulfonyl]phenyl]-5-methyl-; 4-[(4-Methoxy-2-nitrophenyl)azo]-1-[2-methoxy-5-[(2-propionyloxyethyl)sulfonyl]phenyl]-5-methyl-2,4-dihydro-3H-pyrazol-3-one
EINECS	Contact for details

Quality Control

Our production of this advanced intermediate adheres to strict quality management systems to ensure batch-to-batch consistency and purity. Each lot is analyzed using modern analytical techniques including HPLC, IR, and NMR to confirm identity and meet specified impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.