by introduction of conjugated double bonds into the long-chain fatty acid residue of the phorbol ester tumor promoter 12-o-tetradecanoylphorbol-13-acetate ( tpa ) the promoting efficacy is abolished , whereas hyperplasiogenic and irritant activities are not impaired .
C0031586
phorbol ester
C0039654
12-o-tetradecanoylphorbol-13-acetate