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The potential anticholinesterase characteristics of some thiazole derivatives (2a–2j), including the 5-nitrothiophene moiety, were examined in this work. 1H-NMR, 13C-NMR, and HRMS spectral data were used to determine the structure of the compounds. Using a modified Ellman's spectrophotometric approach, each compound was tested for its ability to inhibit acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzymes. It was determined that the compounds exhibited inhibition of between 33.66–47.96 % against AChE and 13.03–63.29 % against BuChE at 80 µg/mL concentration.