Description

4-(2-Hydroxyethyl)-3-Methyl-1-Phenyl-2-Pyrazolin-5-One is a versatile pyrazolone derivative, a key heterocyclic building block valued for its reactivity and functional groups. This compound matters as a crucial intermediate in the synthesis of more complex molecules, particularly in the pharmaceutical and specialty chemical sectors. Industries that need it include pharmaceutical R&D for active ingredient synthesis, agrochemical manufacturing, and fine chemical production for dyes and functional materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of analgesic and anti-inflammatory agents, leveraging the core pyrazolone structure.
• Agrochemical Synthesis: Used in the development of novel pesticides and herbicides, where its heterocyclic core contributes to biological activity.
• Dye and Pigment Manufacturing: Serves as a building block for azo dyes and other colorants, benefiting from its phenyl and reactive hydroxyl groups.
• Fine Chemical Production: Employed in research and development for creating specialized ligands, catalysts, and functional polymers.
• Chemical Research & Development: A valuable reagent for exploring new heterocyclic chemistry and synthesizing libraries of compounds for screening.

Basic Information

Product Name	4-(2-Hydroxyethyl)-3-Methyl-1-Phenyl-2-Pyrazolin-5-One
CAS No.	10223-33-3
Molecular Formula	C₁₂H₁₄N₂O₂
Molecular Weight	218.25 g/mol
Synonyms	3-Methyl-1-phenyl-4-(2-hydroxyethyl)-2-pyrazolin-5-one; 4-(2-Hydroxyethyl)-3-methyl-1-phenyl-5-pyrazolone; 1-Phenyl-3-methyl-4-(2-hydroxyethyl)-5-pyrazolone; 5-Pyrazolone, 4-(2-hydroxyethyl)-3-methyl-1-phenyl-; Phenazone derivative; HEPP; Contact for additional synonyms.
EINECS	233-549-7

Quality Control

Our 4-(2-Hydroxyethyl)-3-Methyl-1-Phenyl-2-Pyrazolin-5-One is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR), to ensure it meets exacting standards for use as a high-value intermediate. A comprehensive Certificate of Analysis (COA) detailing all specifications 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 controlled room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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