Tiwari, O. P. . Design, Synthesis, and Characterization of New 1,3,5-Trisubstituted-2-Pyrazolines Derivative for Analgesic Potential: Design, Synthesis, and Characterization of New 1,3,5-Trisubstituted-2-Pyrazolines Derivative for Analgesic Potential. ijpba 2020, 11.