Description

4,5-Dihydro-1-(2-Methyl-4-Sulphophenyl)-5-Oxo-1H-Pyrazole-3-Carboxylic Acid is a high-purity pyrazole derivative, a key intermediate in the synthesis of advanced organic compounds. Its value lies in its specific molecular structure, which serves as a crucial building block for creating high-performance dyes, pigments, and pharmaceutical active ingredients. This product is essential for manufacturers and R&D laboratories in the fine chemical, specialty dye, and life science sectors seeking reliable, high-quality intermediates for complex synthesis.

Application

• Dye & Pigment Intermediate: A critical precursor in the synthesis of high-performance azo dyes and organic pigments, particularly for textile and industrial colorants.
• Pharmaceutical Synthesis: Serves as a key building block for the development of novel active pharmaceutical ingredients (APIs), especially in heterocyclic chemistry.
• Agrochemical Research: Used in the research and development of new crop protection agents and herbicides due to its pyrazole core structure.
• Fine Chemical Production: Employed as a specialized intermediate in custom synthesis and the manufacture of complex organic molecules.
• Chemical Research & Development: A valuable reagent for academic and industrial R&D focused on heterocyclic chemistry and material science.
• Functional Material Synthesis: Potential use in creating advanced materials with specific optical or electronic properties.

Basic Information

Item	Detail
Product Name	4,5-Dihydro-1-(2-Methyl-4-Sulphophenyl)-5-Oxo-1H-Pyrazole-3-Carboxylic Acid
CAS No.	67939-25-7
Molecular Formula	C12H12N2O5S
Molecular Weight	296.30 g/mol
Synonyms	1-(2-Methyl-4-sulfophenyl)-5-oxo-4,5-dihydro-1H-pyrazole-3-carboxylic acid; 5-Oxo-1-(2-methyl-4-sulfophenyl)-4,5-dihydro-1H-pyrazole-3-carboxylic acid; Pyrazole-3-carboxylic acid, 4,5-dihydro-1-(2-methyl-4-sulfophenyl)-5-oxo-; 1H-Pyrazole-3-carboxylic acid, 4,5-dihydro-1-(2-methyl-4-sulfophenyl)-5-oxo-; 67939-25-7; 2-Methyl-4-sulfophenyl pyrazolone carboxylic acid
EINECS	Contact for details

Quality Control

Our 4,5-Dihydro-1-(2-Methyl-4-Sulphophenyl)-5-Oxo-1H-Pyrazole-3-Carboxylic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive applications like pharmaceutical synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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