... Testosterone 17-Heptanoate 3-Ilenxiloylhydrazoiie C'LARENLE H. C;I,~~AWN Research Laboratories, Charles E. Frosst & Co., Montreal, Canada Received March 7, 1964 ... R & I, R = 0 ... Depahient of Chemistry, Unizersity or Pzttsburgh, Pittsburgh, Pennsybania ...