Description

4-[[5-[[5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl]amino]-2-sulphophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulphophenyl)-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt is a high-purity, synthetic organic compound belonging to the azo pyrazole chemical class, valued for its precise chromophoric and complexing properties. This chemical is engineered to deliver consistent performance as a specialized intermediate or functional dye in advanced manufacturing processes. It is primarily required by industries focused on the production of high-value colorants, analytical reagents, and specialty chemical synthesis.

Application

• Key intermediate in the synthesis of high-performance, reactive dyes and pigments for textiles and inks.
• Specialized reagent for the preparation of metal-complex dyes used in industrial applications.
• Functional component in the development of colorimetric sensors and analytical indicators.
• Precursor for research and development of novel photonic or electronic materials.
• Used in the fine-tuning of shades in the production of specialty paints and coatings.
• Potential intermediate for agrochemical and pharmaceutical research due to its complex heterocyclic structure.

Basic Information

Item	Detail
Product Name	4-[[5-[[5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl]amino]-2-sulphophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulphophenyl)-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt
CAS No.	72639-25-9
Molecular Formula	C24H19ClN7Na2O11S3
Molecular Weight	782.08 g/mol
Synonyms	Acid Red 337; C.I. 17215; Sodium 4-[[5-[[5-chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl]amino]-2-sulfophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulfophenyl)-5-oxo-1H-pyrazole-3-carboxylate; 72639-25-9; Azo pyrazole carboxylic acid sodium salt; Reactive Red Dye Intermediate; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-4-[[5-[[(5-chloro-6-methyl-2-(methylsulfonyl)-4-pyrimidinyl)amino]-2-sulfophenyl]azo]-5-oxo-1-(2-methyl-4-sulfophenyl)-, sodium salt
EINECS	Contact for details

Quality Control

Our production of 4-[[5-[[5-chloro-6-methyl-2-(methylsulphonyl)-4-pyrimidinyl]amino]-2-sulphophenyl]azo]-4,5-dihydro-1-(2-methyl-4-sulphophenyl)-5-oxo-1H-pyrazole-3-carboxylic acid, sodium salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting customer specifications. Certificates of Analysis (COA) documenting all critical parameters 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 controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 3.0%

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