3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-2-phenyl-

• Formula: C₁₀H₁₀N₂O
• Molecular weight: 174.1992
• IUPAC Standard InChI: InChI=1S/C10H10N2O/c1-8-7-10(13)12(11-8)9-5-3-2-4-6-9/h2-6H,7H2,1H3 Copy

  
• IUPAC Standard InChIKey: QELUYTUMUWHWMC-UHFFFAOYSA-N Copy
• CAS Registry Number: 89-25-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: Norphenazone; Edaravone; 2-Pyrazolin-5-one, 3-methyl-1-phenyl-; C.I. Developer 1; Developer Z; 1-Phenyl-3-methylpyrazolone; 3-Methyl-1-phenyl-2-pyrazolin-5-one; 1-Phenyl-3-methyl-5-pyrazolone; 3-Methyl-1-phenyl-5-pyrazolone; Methylphenylpyrazolone; NCI-C03952; 5-Pyrazolone, 3-methyl-1-phenyl-; 1-Fenyl-3-methyl-2-pyrazolin-5-on; 1-Phenyl-3-methylpyrazolone-5; 3-Methyl-1-phenylpyrazol-5-one; 3-Methyl-1-phenylpyrazolin-5-one; 2 4-Dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one; NSC-12; NSC-26139; NSC-2629; 3-Methyl-1-phenylpyrazol-5(4H)-one; Norantipyrine; Radicut
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• Information on this page:
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Phase change data
  • IR Spectrum
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Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Sharon G. Lias and Joel F. Liebman

Ionization energy determinations

Mass spectrum (electron ionization)

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Vondrak, Bastl, et al., 1988
Vondrak, T.; Bastl, Z.; Bohm, S., Gas-phase tautomerism in 2,4-dihydropyrazol-3-ones: An ultraviolet photoelectron spectroscopic study and MNDO molecular orbital calculations, J. Am. Chem. Soc., 1988, 641. [all data]

Notes

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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