1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one

Modify Date: 2026-08-04 22:14:09

1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one Structure
1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one structure
Common Name 1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one
CAS Number 321-07-3 Molecular Weight 228.17100
Density 1.39g/cm3 Boiling Point 278.7ºC at 760mmHg
Molecular Formula C10H7F3N2O Melting Point 195-196°C
MSDS USA Flash Point 122.3ºC

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.39g/cm3
Boiling Point 278.7ºC at 760mmHg
Melting Point 195-196°C
Molecular Formula C10H7F3N2O
Molecular Weight 228.17100
Flash Point 122.3ºC
Exact Mass 228.05100
PSA 32.67000
LogP 1.84220
Index of Refraction 1.543
InChIKey GLGRRRKQSFURGD-UHFFFAOYSA-N
SMILES O=C1CC(C(F)(F)F)=NN1c1ccccc1

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes Xi: Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S36

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

~96%

1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one Structure

1-phenyl-3-(tri...

CAS#:321-07-3

Learn More
Literature: Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, , vol. 45, # 5 p. 1315 - 1318

~85%

1-phenyl-3-(trifluoromethyl)-2-pyrazolin-5-one Structure

1-phenyl-3-(tri...

CAS#:321-07-3

Learn More
Literature: Tetrahedron, , vol. 65, # 13 p. 2660 - 2668

 Bioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Discovery of Small Molecules to Inhibit Human Cytomegalovirus Nuclear Egress
Source: ICCB-Longwood/NSRB Screening Facility, Harvard Medical School
Target: HCMV UL50
External Id: HMS1262
Name: Screen for inhibitors of RMI FANCM (MM2) intereaction
Source: 11908
Target: N/A
External Id: RMI-FANCM-MM2
Name: A screen for compounds that inhibit the activity of LtaS in Staphylococcus aureus
Source: ICCB-Longwood/NSRB Screening Facility, Harvard Medical School
External Id: HMS979
Name: Antiprion activity in ScN2a cells assessed as inhibition of protease-resistant prion ...
Source: ChEMBL
Target: ScN2a
External Id: CHEMBL894352
Name: A screen for compounds that inhibit viral RNA polymerase binding and polymerization a...
Source: ICCB-Longwood/NSRB Screening Facility, Harvard Medical School
Target: Chain A, Poliovirus Polymerase With Gtp
External Id: HMS750
Name: Cytotoxicity against human NB69 cells by MTT assay
Source: ChEMBL
Target: NB69
External Id: CHEMBL895428
Name: Cytotoxicity against mouse ScN2a cells by MTT assay
Source: ChEMBL
Target: ScN2a
External Id: CHEMBL895429
Name: Cytotoxicity against mouse F3 cells by MTT assay
Source: ChEMBL
Target: N/A
External Id: CHEMBL895430
Name: Antiprion activity in F3 cells assessed as inhibition of protease-resistant prion pro...
Source: ChEMBL
Target: NON-PROTEIN TARGET
External Id: CHEMBL894353
Name: Dicer-mediated maturation of pre-microRNA
Source: Center for Chemical Genomics, University of Michigan
Target: N/A
External Id: TargetID_659_CEMA
Total 13, Current Page 1 of 2
1
2

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

1-phenyl-3-trifluoromethyl-5-pyrazolone
3-trifluoromethyl-1-phenyl-2-pyrazolin-5-one
3-triuoromethyl-1-phenyl-2-pyrazolin-5-one
1-Phenyl-3-trifluoromethyl-2-pyrazolin-5-one
MFCD00051655

  | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the CAS number of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: CAS number of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 321-07-3.
Q: What is the melting point of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: Melting point of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 195-196°C.
Q: What is the InChIKey of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: InChIKey of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is GLGRRRKQSFURGD-UHFFFAOYSA-N.
Q: What is the molecular formula of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: Molecular formula of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is C10H7F3N2O.
Q: What is the English name of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: The English name of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one.
Q: What English synonyms does 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one have?
A: English synonyms of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one: 1-phenyl-3-trifluoromethyl-5-pyrazolone, 3-trifluoromethyl-1-phenyl-2-pyrazolin-5-one, 3-triuoromethyl-1-phenyl-2-pyrazolin-5-one, 1-Phenyl-3-trifluoromethyl-2-pyrazolin-5-one, MFCD00051655.
Q: What is the SMILES notation of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: SMILES notation of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is O=C1CC(C(F)(F)F)=NN1c1ccccc1.
Q: What is the LogP of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: LogP of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 1.84220.
Q: What is the boiling point of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: Boiling point of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 278.7ºC at 760mmHg.
Q: What is the molecular weight of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one?
A: Molecular weight of 2-phenyl-5-(trifluoromethyl)-4H-pyrazol-3-one is 228.17100.

 factory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
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