IC50 ACHE 45.5 +/- 4.4 microM BCHE 0.903 +/- 0.003 micro M This is the most active compound against BCHE in Kratky et al. 2014. Many more compounds of this class were tested by the same group but were not more active compounds (Imramovsky et al. 2012) and Phosphorothioates analogues were tested also for antimycobacterial activity Vinsova et al. 2014