92-43-3

Basic information

• Product Name: Phenidone
• Synonyms: Oprea1;P3441_SIGMA;SDCCGMLS-0064787.P001;STK084358;WLN: T5NMVTJ AR;ZERO/001451;ZINC00130674;ZINC02769764
• CAS NO: 92-43-3
• Molecular Formula: C₉H₁₀N₂O
• Molecular Weight: 162.19
• EINECS: 202-155-1
• Mol File: 92-43-3.mol
• Article Data: 7

Chemical Properties

• Melting Point: 119-121 °C(lit.)
• Boiling Point: 288.88°C (rough estimate)
• Flash Point: 137.7 °C
• Appearance: light beige powder or crystals
• Density: 1.1436 (rough estimate)
• Vapor Pressure: 0.000393mmHg at 25°C
• Refractive Index: 1.5600 (estimate)
• Storage Temp.: Store below +30°C.
• Solubility: methanol: 0.1 g/mL, clear
• PKA: 9.50±0.30(Predicted)
• Water Solubility: SOLUBLE IN HOT WATER
• Stability: Stable, but light sensitive. Incompatible with strong acids, strong oxidizing agents, strong bases.
• Merck: 14,7309
• BRN: 131856
• CAS DataBase Reference: Phenidone(CAS DataBase Reference)
• NIST Chemistry Reference: Phenidone(92-43-3)
• EPA Substance Registry System: Phenidone(92-43-3)

Safety Data

• Hazard Codes: Xn,N
• Statements: 22-51/53
• Safety Statements: 61
• RIDADR: UN 2811 6.1/PG 3
• WGK Germany: 2
• RTECS: UQ8750000
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 92-43-3(Hazardous Substances Data)

Usage

Chemical Properties

light beige powder or crystals

Uses

Different sources of media describe the Uses of 92-43-3 differently. You can refer to the following data:
1. Phenidone is used as black and white photographic developer.
2. Phenidone inhibits both the LO (lipoxygenase) and Cox (cyclooxygenase) pathways, the synthesis of Fos-related antigen protein, and is described as an anti-inflammatory and anti-oxidant compound. Phenidone has been shown to block neurotoxicity induced by kainate, and weakens oxidative stress induced by lipopolysaccharide.

Flammability and Explosibility

Notclassified

Safety Profile

Poison by ingestion and intraperitoneal routes. When heated to decomposition it emits toxic fumes of NOx.

InChI:InChI=1/C9H10N2O/c12-9-6-7-11(10-9)8-4-2-1-3-5-8/h1-5H,6-7H2,(H,10,12)

Synthetic route

phenylhydrazine hydrochloride (59-88-1) + acrylic acid methyl ester (292638-85-8) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With sodium methylate In methanol; toluene at 30℃; Reflux;	75%
Stage #1: phenylhydrazine hydrochloride With sodium methylate In ethanol at 40℃; for 0.5h; Stage #2: acrylic acid methyl ester In ethanol Reflux;

3-Amino-1-phenyl-2-pyrazoline (3314-35-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With hydrogenchloride
With sulfuric acid
Multi-step reaction with 3 steps 2: LiAlH4 3: aqueous H2SO4 View Scheme

ethyl-(1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-amine (29522-26-7) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With sulfuric acid

3-hydroxy-propionic acid-(N'-phenyl-hydrazide) (41682-87-5) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With phosphoric acid
With toluene-4-sulfonic acid; xylene Abdestillieren des entstandenen H2O;

2-propenamide (79-06-1) + phenylhydrazine (100-63-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With ethanol; sodium ethanolate

N-ethyl-2-propenamide (5883-17-0) + phenylhydrazine (100-63-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With ethanol; sodium ethanolate

phenylhydrazine (100-63-0) + methyl 3-chloropropionate (6001-87-2) → 1-phenylpyrazolidin-3-one (92-43-3)

ethanol (64-17-5) + sodium ethanolate (141-52-6) + phenylhydrazine (100-63-0) + ethyl acrylate (140-88-5) + benzene (71-43-2) → 1-phenylpyrazolidin-3-one (92-43-3)

phenylhydrazine (100-63-0) + ethyl acrylate (140-88-5) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With ethanol; sodium ethanolate; benzene
With triethylamine

3-(N'-phenyl-hydrazino)-propionitrile (26955-79-3) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With hydrogenchloride
Multi-step reaction with 2 steps 1: aqueous HCl 2: concentrated aqueous HCl View Scheme

phenylhydrazine (100-63-0) + β-halogen-propionic acid ethyl ester → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With alkali

phenylhydrazine (100-63-0) + β-halogen-propionic acid → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
With water
With ethanol
With benzene

3-(N-phenyl-hydrazino)-propionic acid ethyl ester → 1-phenylpyrazolidin-3-one (92-43-3) + 1-phenyl-pyrazolone-(3)

Conditions	Yield
With sodium ethanolate Behandeln mit Wasser und Essigsaeure;

ethanol (64-17-5) + phenylhydrazine (100-63-0) + β-halogensubstituted propionic acid → 1-phenylpyrazolidin-3-one (92-43-3)

water (7732-18-5) + phenylhydrazine (100-63-0) + β-halogensubstituted propionic acid → 1-phenylpyrazolidin-3-one (92-43-3)

phenylhydrazine (100-63-0) + benzene (71-43-2) + β-halogensubstituted propionic acid → 1-phenylpyrazolidin-3-one (92-43-3)

phenylhydrazine (100-63-0) + ester of/the/ β-halogensubstituted propionic acid + alkali → 1-phenylpyrazolidin-3-one (92-43-3)

N-(1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-acetamide (29574-31-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: LiAlH4 2: aqueous H2SO4 View Scheme

ethyl 3-phenylaminopropionate (62750-11-2) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Multi-step reaction with 3 steps 1: diluted hydrochloric acid; NaNO2 2: aluminium amalgam; diethyl ether 3: sodium ethylate / Behandeln mit Wasser und Essigsaeure View Scheme

N-nitroso-N-phenyl-β-alanine ethyl ester (99841-38-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminium amalgam; diethyl ether 2: sodium ethylate / Behandeln mit Wasser und Essigsaeure View Scheme

aniline (62-53-3) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Multi-step reaction with 4 steps 1: 80 °C 2: diluted hydrochloric acid; NaNO2 3: aluminium amalgam; diethyl ether 4: sodium ethylate / Behandeln mit Wasser und Essigsaeure View Scheme
Multi-step reaction with 2 steps 1.1: hydrogenchloride; sodium nitrite / water / 0.33 h / Cooling with ice 1.2: 2 h / -10 - -5 °C 2.1: sodium methylate / ethanol; toluene / 16 h / 40 - 45 °C View Scheme
Multi-step reaction with 2 steps 1: sodium nitrite; tin(ll) chloride 2: toluene View Scheme

phenylhydrazine (100-63-0) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Multi-step reaction with 4 steps 1: sodium ethylate; ethanol 3: LiAlH4 4: aqueous H2SO4 View Scheme
Multi-step reaction with 2 steps 1: sodium ethylate; ethanol 2: aqueous H2SO4 View Scheme
Multi-step reaction with 2 steps 2: concentrated aqueous HCl View Scheme
Multi-step reaction with 3 steps 2: aqueous HCl 3: concentrated aqueous HCl View Scheme
Multi-step reaction with 2 steps 2: toluene-4-sulfonic acid; xylene / Abdestillieren des entstandenen H2O View Scheme

phenylhydrazine hydrochloride (59-88-1) + ethyl acrylate (140-88-5) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
Stage #1: ethyl acrylate With sodium methylate In ethanol; toluene at 40 - 45℃; for 1h; Stage #2: phenylhydrazine hydrochloride In ethanol; toluene at 45℃; for 15h;
With sodium methylate In ethanol; toluene at 40 - 45℃; for 16h;

ethanol (64-17-5) + phenylhydrazine hydrochloride (59-88-1) → 1-phenylpyrazolidin-3-one (92-43-3)

Conditions	Yield
In toluene

1-phenylpyrazolidin-3-one (92-43-3) + N-cyclopentyl-O-benzoylhydroxylamine (80335-74-6) → 1-[2-(cyclopentylamino)phenyl]-3-pyrazolidinone

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; Trimethylacetic acid In toluene at 20℃; Catalytic behavior; Solvent; Temperature;	97%

1-ethenyl-2-pyrrolidinone (88-12-0) + 1-phenylpyrazolidin-3-one (92-43-3) → 1-(2-oxopyrrolidin-1-yl)-1-(5-oxo-2-phenylpyrazolidin-1-yl)ethane

Conditions	Yield
With chloro-trimethyl-silane Heating;	96%

1-phenylpyrazolidin-3-one (92-43-3) + N-(4,4-diethoxybutyl)-4-methylbenzenesulfonylamide (858005-68-2) → 1-phenyl-2-(1-tosylpyrrolidin-2-yl)pyrazolidin-3-one

Conditions	Yield
With trifluoroacetic acid In benzene for 5h; Reflux;	96%

1-phenylpyrazolidin-3-one (92-43-3) + N-(4-(N-(4,4-diethoxybutyl)sulfamoyl)phenyl)acetamide (23461-58-7) → N-(4-((2-(5-oxo-2-phenylpyrazolidin-1-yl)pyrrolidin-1-yl)sulfonyl)phenyl)acetamide

Conditions	Yield
With trifluoroacetic acid In benzene for 5h; Reflux;	95%

1-phenylpyrazolidin-3-one (92-43-3) + diphenyl acetylene (501-65-5) → 3-(2,3-diphenyl-1H-indol-1-yl)propanamide

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; palladium diacetate; sodium carbonate In 1,2-dichloro-ethane at 100℃; for 2h; Catalytic behavior; Reagent/catalyst; Solvent; Sealed tube;	94%
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Reagent/catalyst; Solvent; Schlenk technique; Inert atmosphere; regioselective reaction;	91%

1-phenylpyrazolidin-3-one (92-43-3) + 1-(p-phenylphenyl)oct-1-yne (1208610-05-2) → 3-(2-(biphenyl-4-yl)-3-hexyl-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	93%

1-phenylpyrazolidin-3-one (92-43-3) + N-cyclohexyl-O-benzoylhydroxylamine (1485-75-2) → 1-[2-(cyclohexylamino)phenyl]-3-pyrazolidinone

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; Trimethylacetic acid In toluene at 20℃;	93%

1-phenylpyrazolidin-3-one (92-43-3) + C17H24N2O4 (1510821-72-3) → tert-butyl 4-{[2-(3-oxopyrazolidin-1-yl)phenyl]amino}piperidine-1-carboxylate

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; Trimethylacetic acid In toluene at 20℃;	92%

1-phenylpyrazolidin-3-one (92-43-3) → 1-phenyl-1,2-dihydro-pyrazol-3-one (1008-79-3)

Conditions	Yield
With iron(III) chloride hexahydrate at 80℃;	91%
With trifluoro-N-(oxo-λ4-sulfanylidene)methanesulfonamide In dichloromethane at -30 - 20℃; Inert atmosphere;	80%
With tetrabutylammonium tetrafluoroborate In dichloromethane electrolysis;	21%

1-phenylpyrazolidin-3-one (92-43-3) → 4-bromo-3-hydroxy-1-phenyl-1H-pyrazole (7409-31-6)

Conditions	Yield
With hydrogen bromide; dihydrogen peroxide In chloroform; water at 60℃; for 0.5h; Green chemistry;	91%

1-phenylpyrazolidin-3-one (92-43-3) + benzyl bromide (100-39-0) → 2-benzyl-1-phenyl-3-pyrazolidinone (104573-72-0)

Conditions	Yield
With sodium hydride In N,N-dimethyl-formamide	90%

1-phenylpyrazolidin-3-one (92-43-3) + (hex-1-yn-1-yl)benzene (1129-65-3) → 3-(3-butyl-2-phenyl-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	90%
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; palladium diacetate; sodium carbonate In 1,2-dichloro-ethane at 100℃; for 2h; Sealed tube; regioselective reaction;	85%

1-phenylpyrazolidin-3-one (92-43-3) + C12H15NO3 (1510821-71-2) → 1-{2-[(tetrahydro-2H-pyran-4-yl)amino]phenyl}-3-pyrazolidinone

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; Trimethylacetic acid In toluene at 20℃;	90%

1-Phenylprop-1-yne (673-32-5) + 1-phenylpyrazolidin-3-one (92-43-3) → 3-(3-methyl-2-phenyl-1H-indol-1-yl)propanamide (64359-28-0)

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	89%
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; palladium diacetate; sodium carbonate In 1,2-dichloro-ethane at 100℃; for 2h; Sealed tube; regioselective reaction;	65%

1-phenylpyrazolidin-3-one (92-43-3) + 2-chlorophenylacetylene (873-31-4) → 3-(2-(2-chlorophenyl)-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	89%

4-n-chlorophenylacetylene (873-73-4) + 1-phenylpyrazolidin-3-one (92-43-3) → 3-(2-(4-chlorophenyl)-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	89%

1-phenylpyrazolidin-3-one (92-43-3) → 4-iodo-1-phenyl-1H-pyrazol-3-ol (1190837-95-6)

Conditions	Yield
With sulfuric acid; dihydrogen peroxide; sodium iodide In dichloromethane; water at 25℃; for 2h;	89%

1-phenylpyrazolidin-3-one (92-43-3) + 1-((3,5-dimethoxyphenyl)ethynyl)cyclobutanol (1394173-12-6) → 9-(3,5-dimethoxyphenyl)-9-(2-oxopentyl)-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Inert atmosphere;	89%

1-phenylpyrazolidin-3-one (92-43-3) + 1-(naphthalen-2-ylethynyl)cyclobutanol → 9-(naphthalen-2-yl)-9-(2-oxopentyl)-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Inert atmosphere;	89%

1-phenylpyrazolidin-3-one (92-43-3) + m-chlorophenylacetylene (766-83-6) → 3-(2-(3-chlorophenyl)-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	88%

1-phenylpyrazolidin-3-one (92-43-3) + O-benzoyl-N-sec-butylhydroxylamine (145279-67-0) → 1-[2-(sec-butylamino)phenyl]-3-pyrazolidinone

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; cesium acetate; Trimethylacetic acid In toluene at 20℃;	88%

1-phenylpyrazolidin-3-one (92-43-3) + 1-(2-phenylethynyl)-1-cyclobutanol (308805-77-8) → 9-(2-oxopentyl)-9-phenyl-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Inert atmosphere;	88%
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium acetate In dichloromethane at 60℃; for 8h;	85%

1-phenylpyrazolidin-3-one (92-43-3) + 1-((4-chlorophenyl)ethynyl)cyclobutane-1-ol → 9-(4-chlorophenyl)-9-(2-oxopentyl)-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Inert atmosphere;	88%

1-phenylpyrazolidin-3-one (92-43-3) + C12H11BrO → 9-(3-bromophenyl)-9-(2-oxopentyl)-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Inert atmosphere;	88%

1-phenylpyrazolidin-3-one (92-43-3) + 2-Methyl-4-phenyl-3-butyn-2-ol (1719-19-3) → 5,5-dimethyl-7-phenyl-1,2-dihydro-3H,5H-benzo[c]pyrazolo[1,2-a][1,2]diazepin-3-one

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; zinc diacetate; sodium acetate In toluene at 100℃; for 4h; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Sealed tube;	88%

1-phenylpyrazolidin-3-one (92-43-3) + 4-cyanophenylacetylene (3032-92-6) → 3-(2-(4-cyanophenyl)-1H-indol-1-yl)propanamide

Conditions	Yield
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium acetate In chlorobenzene at 110℃; for 18h; Schlenk technique; Inert atmosphere; regioselective reaction;	87%

1-phenylpyrazolidin-3-one (92-43-3) + bis(3-methylphenyl)acetylene (2765-16-4) → 3-(2,3-di-m-tolyl-1H-indol-1-yl)propanamide

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; palladium diacetate; sodium carbonate In 1,2-dichloro-ethane at 100℃; for 2h; Sealed tube;	87%

1-phenylpyrazolidin-3-one (92-43-3) + 4-cyclopropyl-2-methylbut-3-yn-2-yl acetate (1275615-59-2) → 7-cyclopropyl-5,5-dimethyl-1,2-dihydro-3H,5H-benzo[c]pyrazolo[1,2-a][1,2]diazepin-3-one

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium acetate In 1,2-dichloro-ethane at 100℃; for 12h;	87%

1-phenylpyrazolidin-3-one (92-43-3) + ethyl 1,1-dimethyl-3-phenylpropargyl acetate (61423-02-7) → 5,5-dimethyl-7-phenyl-1,2-dihydro-3H,5H-benzo[c]pyrazolo[1,2-a][1,2]diazepin-3-one

Conditions	Yield
With dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium acetate In 1,2-dichloro-ethane at 100℃; for 12h; Catalytic behavior; Reagent/catalyst; Solvent;	87%

1-phenylpyrazolidin-3-one (92-43-3) + 1-((4-methylphenyl)ethynyl)cyclobutanol (524742-03-8) → 9-(2-oxopentyl)-9-(p-tolyl)-2,3-dihydro-1H,9H-pyrazolo[1,2-a]indazol-1-one

Conditions	Yield
With copper(l) iodide; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; sodium carbonate In 1,2-dichloro-ethane at 50℃; for 12h; Inert atmosphere;	87%

Upstream product

• 3314-35-0 3-Amino-1-phenyl-2-pyrazoline 
• 29522-26-7 ethyl-(1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-amine 
• 64-17-5 ethanol 
• 141-52-6 sodium ethanolate 
• 100-63-0 phenylhydrazine 
• 140-88-5 ethyl acrylate 
• 71-43-2 benzene 
• 7732-18-5 water 
• 59-88-1 phenylhydrazine hydrochloride 
• 292638-85-8 acrylic acid methyl ester 
• 62-53-3 aniline 
• 62750-11-2 ethyl 3-phenylaminopropionate 
• 29574-31-0 N-(1-phenyl-4,5-dihydro-1H-pyrazol-3-yl)-acetamide 
• 26955-79-3 3-(N'-phenyl-hydrazino)-propionitrile 

Downstream Products

• 1008-79-3 1-phenyl-1H-pyrazol-3-ol 
• 23429-68-7 1,1'-diphenyl-4,5,4',5'-tetrahydro-1H,1'H-[3,3']bipyrazolyl 
• 1004112-65-5 2-(difluoromethyl)-1-phenylpyrazolidin-3-one 
• 1257338-97-8 3-(2-((1-phenyl-2H-pyrazol-3-yloxy)methyl)phenyl)oxazolidin-2-one 
• 1190837-95-6 4-iodo-1-phenyl-1H-pyrazol-3-ol 

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