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Synthesis of a novel series of hydrazine clubbed 1,3-thiazoles (5a-m) has been described by reacting hydrazine-1-carbothioamides (3a-k) with α-chloro- or bromo-acetophenones (4a-d) in refluxing ethanol in good to excellent yields (65-86%). Structural confirmation was based upon spectroscopic techniques such as 1H-NMR, 13C-NMR, FT-IR and mass spectrometry. The biological application of these motifs has been demonstrated in terms of their strong urease inhibition activity. The results of in vitro study revealed that all the compounds are th