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A series of novel N¹‐[5‐(4‐substituted phenyl)‐1,3,4‐thiadiazol‐2‐yl]‐N⁴‐(4‐substituted benzaldehyde)‐semicarbazone 1–12, N¹‐[5‐(4‐substituted phenyl)‐1,3,4‐thiadiazol‐2‐yl]‐N⁴‐[1‐(4‐substituted phenyl)ethanone]‐semicarbazone 13‐16, and N¹‐[5‐(4‐substituted phenyl)‐1,3,4‐thiadiazol‐2‐yl]‐N⁴‐[1‐(4‐substituted phenyl) (phenyl) methanone]‐semicarbazone 17–20 were synthesized for their anticonvulsant activity. The chemical structures of the compounds were proved by elemental and spectral (IR, ¹H‐NMR, ¹³C‐NMR, and MS) analysis. The anticonvulsant potential of the compounds was investigated using maximal electroshock seizure (MES) and subcutaneous pentylenetrtrazole (scPTZ) models. Compound 19 was found to possess significant anticonvulsant activity in both the models employed for anticonvulsant evaluation. Compounds 8, 13, 15, and 16 also demonstrated a marked anticonvulsant …