“…Further work [157] has indicated that 4, 4'-dinitrocarbanilide (LXIV a) is the active entity of the nicarbazin complex, and that the pyrimidine moiety only serves as a physiological carrier. It was also shown in this study that 3-chloro-4-(p-chlorophenoxy)-4'-nitrocarbanilide (LXIVb) not only suppressed egg production when fed to S. mansoni-infected mice at 0.0125% of the diet, but also…”