The impure dichloride salt of tetrakisb-(dimethylamino) phenyl] ethylene and a pinacolone that is a substituted acetophenone show several biological properties, one of which is activity against lymphosarcoma in mice. The involvement, if any, of free radicals in the biological properties of these substances is discussed. iCH,) 2+=(= J= cC~ h~ y& Work1 carried out in our laboratories has shown that the unpurified salt (1) 2 of tetrakis [p-( ...
