4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one
Also known as: PMBP, HPMBP, 1-Phenyl-3-methyl-4-benzoyl-2-pyrazolin-5-one, 1-Phenyl-3-methyl-4-benzoylpyrazol-5-one, 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, 4-Benzoyl-3-methyl-1-phenyl-5-pyrazolone, 4-Benzoyl-5-methyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one
4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one (CAS 4551-69-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C17H14N2O2 and a molecular weight of 278.305 g/mol. Key properties include a melting point of 90-92 °C(lit.), a boiling point of 415.2±55.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 204.9±31.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4551-69-3
- Jingsj CID
- J-40713-6
- Molecular Formula
- C17H14N2O2
- Molecular Weight
- 278.305 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 90-92 °C(lit.) |
|---|---|
| Boiling Point | 415.2±55.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 204.9±31.5 °C |
| Exact Mass | 278.105530 |
| PSA | 49.74000 |
| LogP | 3.10 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.630 |
Customs & Trade Information
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one?
The CAS number of 4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one is 4551-69-3.
What are the molecular formula and molecular weight of 4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one?
4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one has molecular formula C17H14N2O2 and molecular weight 278.305 g/mol.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4-Benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one (CAS 4551-69-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40713-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.