Idemudia, Omoruyi G. published the artcile3-Methyl-1-phenyl-4-[(phenyl)(2-phenylhydrazin-1-yl)methylidene]-1H-pyrazol-5(4H)-one, Recommanded Product: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is Acta Crystallographica, Section E: Structure Reports Online (2012), 68(5), o1280-o1281, database is CAplus and MEDLINE.
The title compound, C23H20N4O, is a heterocyclic phenylhydrazone Schiff base with a pyrazole moiety. In the crystal, a variety of interactions occur, including N-H···π and π-π stacking between the Ph ring of the phenylhydrazinyl group and its symmetry-generated equivalent [centroid-centroid distance = 3.6512(7) Å]. Crystallog. data and at. coordinates are given.
Acta Crystallographica, Section E: Structure Reports Online published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Recommanded Product: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics