silandrone silandrone silandrone (inn, usan) (developmental code name sc-16148), also known as testosterone 17β-trimethylsilyl ether or 17β-trimethylsilyltestosterone, as well as 17β-(trimethylsiloxy)androst-4-en-3-one, is a synthetic anabolic-androgenic steroid (aas) and an androgen ether – specifically, the 17β-trimethylsilyl ether of testosterone – which was developed by the g. d. searle & company in the 1960s but was never marketed. it has a very long duration of action when given via subcutaneous or intramuscular injection, as well as significantly greater potency than that of testosterone propionate. in addition, silandrone, unlike testosterone and most esters of testosterone like testosterone propionate, is orally active. silandroneclinical dataother namestestosterone 17β-trimethylsilyl ether; testosterone o-trimethylsilyl ether; 17β-trimethylsilyltestosterone; o-trimethylsilyltestosterone; 17β-(trimethylsiloxy)androst-4-en-3-one; sc-16148; nsc-95147routes ofadministrationby mouth, intramuscular injection, subcutaneous injectionidentifiers iupac name (8r,9s,10r,13s,14s,17s)-10,13-dimethyl-17-trimethylsilyloxy-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopentaphenanthren-3-one cas number5055-42-5pubchem cid68627chemspider61886 yuniiyy7gl3cce9keggd05837chebichebi:607921chemblchembl485687comptox dashboard (epa)dtxsid60884126 echa infocard100.023.414 chemical and physical dataformulac22h36o2simolar mass360.613 g·mol−13d model (jsmol)interactive image smiles c12cc3(1cc2o(c)(c)c)ccc4=cc(=o)cc34c inchi inchi=1s/c22h36o2si/c1-21-12-10-16(23)14-15(21)6-7-17-18-8-9-20(24-25(3,4)5)22(18,2)13-11-19(17)21/h14,17-20h,6-13h2,1-5h3/t17-,18-,19-,20-,21-,22-/m0/s1key:hnzdtaxzhuditm-wlnpfyqqsa-n