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CAS No 89-25-8 , 5-methyl-2-phenyl-4H-pyrazol-3-one

  • Name: 5-methyl-2-phenyl-4H-pyrazol-3-one
  • Synonyms: 5-methyl-2-phenyl-4H-pyrazol-3-one;edaravone; Norantipyrine; Developer Z; 3-METHYL-1-PHENYL-2-PYRAZOLIN-5-ONE; Norphenazone; 89-25-8; MCI-186; 1-Phenyl-3-methyl-5-pyrazolone; Radicut;
  • CAS Registry Number:
  • Melting Point: 127-131 ºC
  • Boiling Point: 287 ºC (265 MMHG)
  • Density: 1,12 g/cm3
  • Refractive index: 0.00014 (25 C)
  • Water Solubility: 3 G/L (20 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29331990
  • EINECS: 201-891-0
  • Molecular Weight: 174.1992
  • InchiKey: QELUYTUMUWHWMC-UHFFFAOYSA-N
  • InChI: InChI=1S/C10H10N2O/c1-8-7-10(13)12(11-8)9-5-3-2-4-6-9/h2-6H,7H2,1H3
  • Risk Statements: S26;S36
  • Molecular Formula: C10H10N2O
  • Molecular Structure:CAS No:89-25-8 5-methyl-2-phenyl-4H-pyrazol-3-one

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References of 5-methyl-2-phenyl-4H-pyrazol-3-one
Title: Norphenazone
CAS Registry Number: 89-25-8
CAS Name: 2,4-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one
Synonyms: 3-methyl-1-phenyl-2-pyrazolin-5-one; 1-phenyl-3-methyl-5-pyrazolone; C.I. Developer 1; developer Z; norantipyrine
Manufacturers' Codes: MCI-186
Molecular Formula: C10H10N2O
Molecular Weight: 174.20
Percent Composition: C 68.95%, H 5.79%, N 16.08%, O 9.18%
Literature References: Free radical scavenger; metabolite of antipyrine, q.v. Prepn: L. Knorr, Ann. 238, 137 (1887). Structural determn by NMR and IR: R. Jones et al., Tetrahedron 19, 1497 (1963); F.-D. H?ppner et al., J. Prakt. Chem. 318, 555 (1976). Crystal structure: F. Bechtel et al., Cryst. Struct. Commun. 3, 469 (1973). HPLC determn in urine: M. A. Mikati et al., J. Chromatogr. 433, 305 (1988). Anti-ischemic and radical scavenging actions: T. Watanabe et al., J. Pharmacol. Exp. Ther. 268, 1597 (1994).
Properties: White crystals from benzene, mp 129-130°. Also reported as mp 127° (Knorr). bp265 287°.
Melting point: mp 129-130°; mp 127° (Knorr)
Boiling point: bp265 287°
Therap-Cat: In treatment of stroke.