Description

3-Methyl-1-(3′-chlorophenyl)-2-pyrazolin-5-one (CAS No. 90-31-3) is a high-purity heterocyclic organic compound with the molecular formula C₁₀H₉ClN₂O. This pyrazolone derivative, also known by its IUPAC name 2-(3-chlorophenyl)-5-methyl-4H-pyrazol-3-one, is widely utilized in pharmaceutical and chemical research due to its versatile reactivity. The compound features a chlorophenyl substituent, enhancing its potential as a building block for drug synthesis and specialty chemicals. Our product is rigorously tested for purity and stability, ensuring optimal performance in synthetic applications. Available in various quantities, it is ideal for researchers requiring a reliable intermediate for heterocyclic chemistry.

Properties

• CAS Number: 90-31-3
• Complexity: 277
• IUPAC Name: 2-(3-chlorophenyl)-5-methyl-4H-pyrazol-3-one
• InChI: InChI=1S/C10H9ClN2O/c1-7-5-10(14)13(12-7)9-4-2-3-8(11)6-9/h2-4,6H,5H2,1H3
• InChI Key: RIOMUJXIGYZENC-UHFFFAOYSA-N
• Exact Mass: 208.0403406
• Molecular Formula: C10H9ClN2O
• Molecular Weight: 208.64
• SMILES: CC1=NN(C(=O)C1)C2=CC(=CC=C2)Cl
• Topological: 32.7
• Monoisotopic Mass: 208.0403406
• Synonyms: 90-31-3, 1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one, 2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-, EINECS 201-984-6, 2-(3-Chlorophenyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one, 3H-Pyrazol-3-one, 2-(3-chlorophenyl)-2,4-dihydro-5-methyl-, NSC 166399, EC 201-984-6, 1-(m-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE, 3-Methyl-1-(3′-chlorophenyl)-2-pyrazolin-5-one, 1-(3-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE, 76806T6L7I, NSC-166399, 2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-(8CI), 201-984-6, 1-(3′-chlorophenyl)-3-methyl-2-pyrazolin-5-one, 1-(3-chlorophenyl)-3-methyl-4,5-dihydropyrazole-5-one, 1-(3-CHLOROPHENYL)-3-METHYL-4,5-DIHYDRO-1H-PYRAZOL-5-ONE, 2-(3-chlorophenyl)-5-methyl-4H-pyrazol-3-one, 1-(3′-Chlorophenyl)-3-methyl-5-pyrazolone, m-Chloropyrazone, MFCD00020750, NSC166399, Maybridge4_003722, REGID_for_CID_66656, SCHEMBL1260486, CHEMBL1444702, DTXSID3059006, UNII-76806T6L7I, HMS1531J04, HMS2769H11, AAA09031, SBB058487, AKOS000119612, CCG-245085, s10604, NCGC00246159-01, AS-10049, NS00002282, ST50409516, (m-Chlorophenyl)-3-methyl-2-pyrazolin-5-one, Q27266469, Z50146757, 2-(3-Chlorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one

Application

3-Methyl-1-(3′-chlorophenyl)-2-pyrazolin-5-one serves as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of analgesic and anti-inflammatory agents. Its pyrazolone core is valuable for constructing biologically active molecules, including potential CNS-targeting compounds. Researchers also employ it in metallurgy and dye chemistry as a chelating agent or precursor for functional materials.

Safety and Hazards

GHS Hazard Statements

• H411 (99.8%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P273, P391, and P501

Hazard Classes and Categories

• Aquatic Chronic 2 (99.8%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.