with urethan as an initiator , it was found that tumor promoters ( 12-o-tetradecanoylphorbol-13-acetate and phorbol-12 , 13-didecanoate ) induced a considerable response in the assay system , while nonpromoting phorbol esters ( 4-o-methyl-12-o-tetradecanoylphorbol-13-acetate and 4 alpha-phorbol-12 , 13-didecanoate ) did not affect the survival .
C0039654
12-o-tetradecanoylphorbol-13-acetate
C0031586
phorbol