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A novel pyrazoline derivative 2 was synthesized by reaction of an α,β-unsaturated ketone 1 with isonicotinic acid hydrazide (INH) in glacial acetic acid. The structure of the title compound 2 was established on basis of IR, 1H-NMR, 13C-NMR and mass spectral data

[5-(1,3-Diphenyl-1H-pyrazol-4-yl)-3-phenyl-4,5-dihydropyrazol-1-yl](pyridin-4-yl)methanone