1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one
Also known as: 1-Phenyl-3-(trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one, 1-phenyl-3-trifluoromethyl-5-pyrazolone, 2-Phenyl-5-(trifluoromethyl)-2,4-dihydro-3H-pyrazol-3-one, 3-Trifluoromethyl-1-phenyl-2-pyrazolin-5-one, MFCD00051655
1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one (CAS 321-07-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H7F3N2O and a molecular weight of 228.17100 g/mol. Key properties include a melting point of 195-196°C, a boiling point of 278.7ºC at 760mmHg, a density of 1.39g/cm3 and a flash point of 122.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 321-07-3
- Jingsj CID
- J-32293-0
- Molecular Formula
- C10H7F3N2O
- Molecular Weight
- 228.17100 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 195-196°C |
|---|---|
| Boiling Point | 278.7ºC at 760mmHg |
| Density | 1.39g/cm3 |
| Flash Point | 122.3ºC |
| Exact Mass | 228.05100 |
| PSA | 32.67000 |
| LogP | 1.84220 |
| Refractive Index | 1.543 |
Frequently Asked Questions
What is the CAS number of 1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one?
The CAS number of 1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one is 321-07-3.
What are the molecular formula and molecular weight of 1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one?
1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one has molecular formula C10H7F3N2O and molecular weight 228.17100 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. "1-Phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one (CAS 321-07-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32293-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.