1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone

Modify Date: 2025-08-24 22:37:05

1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone Structure
1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone structure
 Common Name 1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone
CAS Number 20629-90-7 Molecular Weight 208.64400
Density 1.306 g/cm3 Boiling Point 326.048ºC at 760 mmHg
Molecular Formula C10H9ClN2O Melting Point 128-131ºC(lit.)
MSDS N/A Flash Point 150.989ºC

 Names

Name 1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.306 g/cm3
Boiling Point 326.048ºC at 760 mmHg
Melting Point 128-131ºC(lit.)
Molecular Formula C10H9ClN2O
Molecular Weight 208.64400
Flash Point 150.989ºC
Exact Mass 208.04000
PSA 32.67000
LogP 1.95320

 Safety Information

Hazard Codes Xi: Irritant;
Risk Phrases R36/37/38
Safety Phrases 26-36
WGK Germany 3
HS Code 2933199090

 Synthetic Route

Methyl acetoacetate structure

Methyl acetoacetate

CAS#:105-45-3

(2-CHLOROPHENYL)HYDRAZINE HYDROCHLORIDE structure

(2-CHLOROPHENYL...

CAS#:10449-07-7

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1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone Structure

1-(3'-Chlorophe...

CAS#:20629-90-7

Literature: WO2006/71730 A1, ; Page/Page column 47; 48 ; WO 2006/071730 A1
Ethyl acetoacetate structure

Ethyl acetoacetate

CAS#:141-97-9

(2-CHLOROPHENYL)HYDRAZINE HYDROCHLORIDE structure

(2-CHLOROPHENYL...

CAS#:10449-07-7

~%

1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone Structure

1-(3'-Chlorophe...

CAS#:20629-90-7

Literature: Roczniki Chemii, vol. 8, p. 325 Chem. Zentralbl., , vol. 99, # II p. 1883
(2-CHLOROPHENYL)HYDRAZINE HYDROCHLORIDE structure

(2-CHLOROPHENYL...

CAS#:10449-07-7

~%

1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone Structure

1-(3'-Chlorophe...

CAS#:20629-90-7

Literature: Justus Liebigs Annalen der Chemie, , vol. 471, p. 136
ethyl 3-(phenylazo)but-2-enoate structure

ethyl 3-(phenyl...

CAS#:35467-82-4

~%

1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone Structure

1-(3'-Chlorophe...

CAS#:20629-90-7

Literature: Justus Liebigs Annalen der Chemie, , vol. 471, p. 136

 Customs

HS Code 2933199090
Summary 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 Synonyms

2-(2-chloro-phenyl)-5-methyl-1,2-dihydro-pyrazol-3-one
MCPMP
2-(2-Chlor-phenyl)-5-methyl-1,2-dihydro-pyrazol-3-on
1-(2-Chlor-phenyl)-3-methyl-pyrazolon-(5)
3H-Pyrazol-3-one,2-(2-chlorophenyl)-1,2-dihydro-5-methyl
1-(2-chlorophenyl)-3-methyl-5-pyrazolone
1-(M-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE
1-(M-CHLOROPHENYL)-3-METHYL-2-PYRAZOLIN-5-ONE
1-(o-chlorophenyl)-3-methyl-5-pyrazolone
MFCD00020750
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Chemsrc provides CAS#:20629-90-7 MSDS, density, melting point, boiling point, structure, etc. Its name is 1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone>> amp version: 1-(3'-Chlorophenyl)-3-methyl-5-pyrazolone

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