17.beta.-(Trimethylsiloxy)androst-4-en-3-one 17.beta.-(Trimethylsiloxy)testosterone 5055-42-5 Androst-4-en-3-one, 17-[(trimethylsilyl)oxy]-, (17.beta.)- Androst-4-en-3-one, 17.beta.-(trimethylsiloxy)- NSC95147 O-Trimethylsilyltestosterone SC 16148 SC-16148 Silandrone TESTOSTERONE TRIMETHYLSILYL ETHER