2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE

Modify Date: 2025-09-24 17:55:57

2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE Structure
2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE structure
Common Name 2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE
CAS Number 100553-83-1 Molecular Weight 192.19000
Density 1.26 Boiling Point 351.3ºC at 760 mmHg
Molecular Formula C10H9FN2O Melting Point 148-149ºC
MSDS N/A Flash Point N/A

 Names

Name 2-(4-fluorophenyl)-5-methyl-4H-pyrazol-3-one
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.26
Boiling Point 351.3ºC at 760 mmHg
Melting Point 148-149ºC
Molecular Formula C10H9FN2O
Molecular Weight 192.19000
Exact Mass 192.07000
PSA 32.67000
LogP 1.43890
Vapour Pressure 4.15E-05mmHg at 25°C
Index of Refraction 1.59
Storage condition 2-8℃

 Synthetic Route

~66%

2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE Structure

2-(4-CHLOROPHEN...

CAS#:100553-83-1

Literature: Tagawa, Yoshinobu; Minami, Shin'ichi; Yoshida, Toshio; Tanaka, Keitaro; Sato, Shuji; Goto, Yoshinobu; Yamagata, Kenji Archiv der Pharmazie (Weinheim, Germany), 2002 , vol. 335, # 2 p. 99 - 103

~%

2-(4-CHLOROPHENYL)-5-METHYL-2,4-DIHYDRO-3H-PYRAZOLE-3-ONE Structure

2-(4-CHLOROPHEN...

CAS#:100553-83-1

Literature: US2007/49574 A1, ; Page/Page column 20-21 ; US 20070049574 A1

 Synonyms

HMS560M04
5-methyl-2-(4-fluorophenyl)-2,4-dihydropyrazol-3-one
1-(4-Fluorophenyl)-3-methyl-3-pyrazolin-5-one
1-(4-Fluorophenyl)-3-methyl-2-pyrazolin-5-one
3-methyl-1-(4-fluorophenyl)-2-pyrazolin-5-one
2-(4-fluoro-phenyl)-5-methyl-2,4-dihydro-pyrazol-3-one
2-(4-fluorophenyl)-5-methyl-2,4-dihydro-3H-pyrazol-3-one
3-methyl-1-(p-fluorophenyl)-1,4-dihydro-pyrazol-5-one
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