Stilbestrol, anaa stilboestrol, a wɔsan frɛ no 4,4'-dihydroxystilbene anaa 4,4'-stilbenediol, yɛ stilbenoid nonsteroidal estrogen ne parent compound a ɛwɔ kuo bi mu a wɔn a wɔwo no yɛ nonsteroidal estrogen derivatives a emu yɛ den a, diethylstilbestrol (DES) ka ho. Wɔtae de asɛmfua "stilbestrol" di dwuma wɔ ɔkwan a ɛmfata so de kyerɛ DES, nanso ɛnyɛ ɛno ara ne no.