3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one
3-(三氟甲基)-1H-吡唑-5(4H)-酮
Also known as: 3-(Trifluoromethyl)-2-pyrazolin-5-one, 3-(Trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one, 2,4-Dihydro-5-(trifluoromethyl)-3H-pyrazol-3-one, 5-(Trifluoromethyl)-2,4-dihydro-3H-pyrazol-3-one, 3-Trifluoromethyl-1H-5-pyrazolone
3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one (CAS 401-73-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3F3N2O and a molecular weight of 152.07500 g/mol. It is also known as 3-(Trifluoromethyl)-2-pyrazolin-5-one, 3-(Trifluoromethyl)-4,5-dihydro-1H-pyrazol-5-one and 2,4-Dihydro-5-(trifluoromethyl)-3H-pyrazol-3-one. Key properties include a melting point of 214-217ºC and a density of 1.7 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 401-73-0
- Jingsj CID
- J-17010-9
- Molecular Formula
- C4H3F3N2O
- Chinese Name
- 3-(三氟甲基)-1H-吡唑-5(4H)-酮
- Molecular Weight
- 152.07500 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 214-217ºC |
|---|---|
| Density | 1.7 g/cm3 |
Frequently Asked Questions
What is the CAS number of 3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one?
The CAS number of 3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one is 401-73-0.
What are the molecular formula and molecular weight of 3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one?
3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one has molecular formula C4H3F3N2O and molecular weight 152.07500 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-(Trifluoromethyl)-1H-pyrazol-5(4H)-one (CAS 401-73-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17010-9 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.