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. 2025 Feb 28;10(9):9703–9717. doi: 10.1021/acsomega.4c11076

Table 2. Evaluation of the Inhibitory Activities of the Selected Thiazolo-quinazolines 4 and 5, in Comparison with Ciprofloxacin, Against S. aureus DNA Gyrasea.

  IC50(μM) (mean ± SEM)
Compd. No. S. aureusDNA gyrase supercoiling
4 11.72 ± 0.47
5 7.13 ± 0.28
Ciprofloxacin 19.3 ± 0.73
a

IC50: The compound concentration required to inhibit 50% of the enzyme activity, represented by the standard error of the mean (SEM). Each value corresponds to the average of three readings.