Nitin Sati, Sushil Kumar, Sushil Sati Synthesis and Pharmacological Evaluation of 7-{2-[4-(Substituted phenyl)-piperazin-1-yl]-2-Oxo-Ethoxy}-4-Methyl-Chromen-2-Ones as Serotonin 5-HT2 Receptors Antagonist DOI: https://doi.org/10.37285/ijddd.2.1.9