2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one

2,4-二氢-5-(4-氟苯基)-2-苯基-3H-吡唑-3-酮

Also known as: 3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-5-ol, 1H-Pyrazol-5-ol, 3-(4-fluorophenyl)-1-phenyl-, 5-(4-Fluorophenyl)-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, 5-(4-fluorophenyl)-2-phenyl-4H-pyrazol-3-one, i01-9833

2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one (CAS 575455-54-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H11FN2O and a molecular weight of 254.25900 g/mol. It is also known as 3-(4-fluorophenyl)-1-phenyl-1H-pyrazol-5-ol, 1H-Pyrazol-5-ol, 3-(4-fluorophenyl)-1-phenyl- and 5-(4-Fluorophenyl)-2-phenyl-2,4-dihydro-3H-pyrazol-3-one. Key properties include a boiling point of 364.859ºC at 760 mmHg, a density of 1.245g/cm3 and a flash point of 174.461ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
575455-54-8
Jingsj CID
J-1437943-1
Molecular Formula
C15H11FN2O
Chinese Name
2,4-二氢-5-(4-氟苯基)-2-苯基-3H-吡唑-3-酮
Molecular Weight
254.25900 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point364.859ºC at 760 mmHg
Density1.245g/cm3
Flash Point174.461ºC

Frequently Asked Questions

What is the CAS number of 2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one?

The CAS number of 2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one is 575455-54-8.

What are the molecular formula and molecular weight of 2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one?

2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one has molecular formula C15H11FN2O and molecular weight 254.25900 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2,4-Dihydro-5-(4-fluorophenyl)-2-phenyl-3H-pyrazol-3-one (CAS 575455-54-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1437943-1 (accessed 2026-10-26).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.