1-(2-Pyridylcarbonyl)-5-phenyl-2-pyrazoline 121306-61-4 1H-Pyrazole, 4,5-dihydro-5-phenyl-1-(2-pyridinylcarbonyl)- 5-Phenyl-1-(2-pyridinylcarbonyl)-4,5-dihydro-1H-pyrazole