Description

1-(2-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One is a versatile heterocyclic organic compound belonging to the pyrazolone class, serving as a critical intermediate in advanced chemical synthesis. Its value lies in its unique molecular structure, which provides a reactive scaffold for constructing more complex molecules in pharmaceutical and agrochemical research. This product is essential for R&D chemists and process development scientists working in medicinal chemistry, crop protection, and fine chemical manufacturing.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those with analgesic or anti-inflammatory potential.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging its chlorophenyl and pyrazolone motifs.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and other specialty chemicals requiring a substituted pyrazolone core.
• Research & Development: A valuable reagent in academic and industrial laboratories for exploring new heterocyclic chemistry and reaction pathways.
• Chemical Library Building: Employed in combinatorial chemistry and high-throughput screening for drug discovery programs.

Basic Information

Product Name	1-(2-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One
CAS No.	14580-22-4
Molecular Formula	C10H9ClN2O
Molecular Weight	208.64 g/mol
Synonyms	3-Methyl-1-(2-chlorophenyl)-2-pyrazolin-5-one; 1-(2-Chlorophenyl)-3-methyl-5-pyrazolone; 2-Chlorophenyl-3-methyl-5-pyrazolone; 5-Pyrazolone, 1-(2-chlorophenyl)-3-methyl-; 3-Methyl-1-o-chlorophenyl-5-pyrazolone; Antipyrine, 1-(2-chlorophenyl)-3-methyl-; o-Chloro-3-methyl-1-phenyl-5-pyrazolone
EINECS	Contact for details

Quality Control

Our 1-(2-Chlorophenyl)-3-Methyl-2-Pyrazolin-5-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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