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Basic Information
CAS No.: 4645-07-2
Name: 2,4-dihydro-4-[(2-methoxyphenyl)azo]-5-methyl-2-phenyl-3H-Pyrazol-3-one
Molecular Structure:
Molecular Structure of 4645-07-2 (2,4-dihydro-4-[(2-methoxyphenyl)azo]-5-methyl-2-phenyl-3H-Pyrazol-3-one)
Formula: C17H16N4O2
Molecular Weight: 308.34
Synonyms: 2-Pyrazolin-5-one,4-[(o-methoxyphenyl)azo]-3-methyl-1-phenyl- (6CI,7CI,8CI);3H-Pyrazol-3-one,2,4-dihydro-4-[(2-methoxyphenyl)azo]-5-methyl-2-phenyl- (9CI);3H-Pyrazol-3-one,2,4-dihydro-4-[2-(2-methoxyphenyl)diazenyl]-5-methyl-2-phenyl-;
EINECS: 225-074-3
Density: 1.24 g/cm3
Melting Point: 166-167 ºC
Boiling Point: 505.3 ºC at 760 mmHg
Flash Point: 259.4 ºC
PSA: 66.62000
LogP: 3.07080
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Chemistry


IUPAC Name: 4-(2-Methoxyphenyl)diazenyl-5-methyl-2-phenyl-4H-pyrazol-3-one
Molecular Formula: C17H16N4O2 
Molecular Weight: 308.33 g/mol
SMILES: C1([C@@H](\N=N\c2ccccc2OC)C(C)=NN1c1ccccc1)=O
InChI: InChI=1/C17H16N4O2/c1-12-16(19-18-14-10-6-7-11-15(14)23-2)17(22)21(20-12)13-8-4-3-5-9-13/h3-11,16H,1-2H3/b19-18+
EINECS: 225-074-3
XLogP3-AA: 3.3
H-Bond Donor: 0
H-Bond Acceptor: 5
Surface Tension: 47.2 dyne/cm 
Density: 1.24 g/cm3 
Flash Point: 259.4 °C 
Enthalpy of Vaporization: 77.49 kJ/mol 
Boiling Point: 505.3 °C at 760 mmHg 
Melting Point: 166-167 °C
Vapour Pressure of Solvent Yellow 72 (CAS NO.4645-07-2): 2.47E-10 mmHg at 25 °C

Specification

  Solvent Yellow 72 (CAS NO.4645-07-2), its Synonyms are 2,4-Dihydro-4-((2-methoxyphenyl)azo)-5-methyl-2-phenyl-3H-pyrazol-3-one ; 3H-Pyrazol-3-one, 2,4-dihydro-4-((2-methoxyphenyl)azo)-5-methyl-2-phenyl- ; 3H-Pyrazol-3-one, 2,4-dihydro-4-(2-(2-methoxyphenyl)diazenyl)-5-methyl-2-phenyl- ; 2-Pyrazolin-5-one, 4-((o-methoxyphenyl)azo)-3-methyl-1-phenyl- ; 4-((o-Methoxyphenyl)azo)-3-methyl-1-phenyl-2-pyrazolin-5-one .