Silandrone

Silandrone
Clinical data

Other names	Testosterone 17β-trimethylsilyl ether; Testosterone O-trimethylsilyl ether; 17β-Trimethylsilyltestosterone; O-Trimethylsilyltestosterone; 17β-(trimethylsiloxy)androst-4-en-3-one; SC-16148; NSC-95147
Routes of administration	By mouth, intramuscular injection, subcutaneous injection
Identifiers
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-dodecahydrocyclopenta[a]phenanthren-3-one
CAS Number	5055-42-5
PubChem CID	68627
ChemSpider	61886^Y
UNII	YY7GL3CCE9
KEGG	D05837
ChEBI	CHEBI:607921
ChEMBL	ChEMBL485687
CompTox Dashboard (EPA)	DTXSID60884126
ECHA InfoCard	100.023.414
Chemical and physical data
Formula	C₂₂H₃₆O₂Si
Molar mass	360.613 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES C[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2O[Si](C)(C)C)CCC4=CC(=O)CC[C@]34C
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/s1 Key:HNZDTAXZHUDITM-WLNPFYQQSA-N

Silandrone (INNTooltip International Nonproprietary Name, USANTooltip United States Adopted Name) (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.^[1] 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.^[2]^[3] In addition, silandrone, unlike testosterone and most esters of testosterone like testosterone propionate, is orally active.^[4]

References

^ J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 642–. ISBN 978-1-4757-2085-3.
^ Saunders FJ (November 1966). "A singularly long-acting ether of testosterone". Proceedings of the Society for Experimental Biology and Medicine. 123 (2): 303–4. doi:10.3181/00379727-123-31472. PMID 5951069. S2CID 21363508.
^ Le Boeuf BJ, Allen JL (1970). "Prolonged reinstatement of sexual behavior in castrated male rats with an ether of testosterone, SC-16148". Hormones and Behavior. 1 (2): 121–125. doi:10.1016/0018-506X(70)90004-8.
^ Chinn LJ (1969). The Chemistry and Biochemistry of Steroids. Geron-X. p. 97. ISBN 9780876720035.

Androgen receptor modulators

Agonists	Testosterone derivatives: 4-Androstenediol 4-Dehydroepiandrosterone (4-DHEA) 4-Hydroxytestosterone 4,17α-Dimethyltestosterone 5-Androstenedione 11-Ketotestosterone 11β-Hydroxyandrostenedione Adrenosterone (11-ketoandrostenedione, 11-oxoandrostenedione) Androstenediol (5-androstenediol) Androstenediol 3β-acetate Androstenediol 17β-acetate Androstenediol diacetate Androstenediol dipropionate Androstenedione (4-androstenedione) Atamestane Boldenone Boldenone undecylenate Boldione (1,4-androstadienedione) Clostebol Clostebol acetate Clostebol caproate Clostebol propionate Cloxotestosterone Cloxotestosterone acetate Dehydroandrosterone DHEA (androstenolone, prasterone; 5-DHEA) DHEA enanthate (prasterone enanthate) DHEA sulfate Exemestane Formestane Plomestane Quinbolone Silandrone Testosterone^# (+dutasteride) Testosterone esters Polytestosterone phloretin phosphate 5α-Dihydrotestosterone derivatives: 1-Androstenediol 1-Androstenedione 1-Androsterone (1-andro, 1-DHEA) 1-Testosterone 3α-Androstanediol 5α-Androst-2-en-17-one 7β-Hydroxyepiandrosterone 11-Ketodihydrotestosterone Androsterone Bolazine Bolazine capronate Dihydroethyltestosterone Dihydrofluoxymesterone Dihydromethylandrostenediol Dihydrotestosterone (DHT) (androstanolone, stanolone) Dihydrotestosterone esters Drostanolone Drostanolone propionate Epiandrosterone Epitiostanol Mepitiostane Mesabolone Mesterolone Mesterolone cipionate Methyldiazinol Nisterime Nisterime acetate Prostanozol Stenbolone Stenbolone acetate Testifenon (testiphenon, testiphenone) 19-Nortestosterone derivatives: 7α-Methyl-19-norandrostenedione (MENT dione, trestione) 11β-Methyl-19-nortestosterone 11β-Methyl-19-nortestosterone dodecylcarbonate 19-Nor-5-androstenediol 19-Nor-5-androstenedione 19-Nordehydroepiandrosterone Bolandiol Bolandiol dipropionate Bolandione (19-nor-4-androstenedione) Bolmantalate (nandrolone adamantoate) Dienedione Dienolone Dimethandrolone Dimethandrolone buciclate Dimethandrolone dodecylcarbonate Dimethandrolone undecanoate LS-1727 (nandrolone 17β-N-(2-chloroethyl)-N-nitrosocarbamate) Methoxydienone (methoxygonadiene) Nandrolone Nandrolone esters Norclostebol Norclostebol acetate Normethandrone (methylestrenolone, normethisterone) Oxabolone Oxabolone cipionate (oxabolone cypionate) Trenbolone Trenbolone acetate Trenbolone enanthate Trenbolone hexahydrobenzylcarbonate Trenbolone undecanoate Trendione Trestolone (MENT) Trestolone acetate Trestolone enanthate 5α-Dihydro-19-nortestosterone derivatives: 5α-Dihydronandrolone 5α-Dihydrotrestolone 19-Norandrosterone 17α-Alkylated testosterone derivatives: Bolasterone Calusterone Chlorodehydromethylandrostenediol (CDMA) Chlorodehydromethyltestosterone (CDMT) Chloromethylandrostenediol (CMA) Enestebol Ethyltestosterone Fluoxymesterone Formebolone Hydroxystenozole Metandienone (methandrostenolone) Methandriol (methylandrostenediol) Methandriol bisenanthoyl acetate Methandriol diacetate Methandriol dipropionate Methandriol propionate Methylclostebol (chloromethyltestosterone) Methyltestosterone (+esterified estrogens) Methyltestosterone 3-hexyl ether Oxymesterone Penmesterol Tiomesterone 17α-Alkylated 5α-dihydrotestosterone derivatives: Androisoxazole Desoxymethyltestosterone Furazabol Mebolazine (dimethazine) Mestanolone Metenolone Metenolone acetate Metenolone enanthate Methasterone Methyl-1-testosterone Methylepitiostanol Methylstenbolone Oxandrolone Oxymetholone Stanozolol 17α-Alkylated 19-nortestosterone derivatives: Bolenol Dimethyldienolone Dimethyltrienolone Ethyldienolone Ethylestrenol Methyldienolone Methylhydroxynandrolone (MOHN, MHN) Metribolone Mibolerone Norboletone Norethandrolone Propetandrol RU-2309 Tetrahydrogestrinone 17α-Alkylated 5α-dihydro-19-nortestosterone derivatives: 5α-Dihydronorethandrolone 5α-Dihydronormethandrone 17α-Vinyltestosterone derivatives: Norvinisterone (vinylnortestosterone) 17α-Vinyl-19-nortestosterone derivatives: Vinyltestosterone 17α-Ethynyltestosterone derivatives: Danazol Ethinylandrostenediol Ethandrostate Ethisterone (ethynyltestosterone) 5α-Dihydro-17α-ethynyltestosterone derivatives: 17α-Ethynyl-3α-androstanediol 17α-Ethynyl-3β-androstanediol Dihydroethisterone 17α-Ethynyl-19-nortestosterone derivatives: Δ⁴-Tibolone Desogestrel Etonogestrel Etynodiol Etynodiol diacetate Gestodene Gestrinone Levonorgestrel Levonorgestrel esters (e.g., levonorgestrel butanoate) Lynestrenol Lynestrenol phenylpropionate Norethisterone Norethisterone esters (e.g., norethisterone acetate, norethisterone enanthate) Norgestrel Norgestrienone Quingestanol Quingestanol acetate Tibolone 5α-Dihydro-17α-ethynyl-19-nortestosterone derivatives: 5α-Dihydrolevonorgestrel 5α-Dihydronorethisterone Progesterone derivatives: 6α-Methylprogesterone Medroxyprogesterone acetate Megestrol acetate Others/unsorted: 3-Keto-5α-abiraterone 5α-Androstane Alternariol Cl-4AS-1 Drupanol Trilostane ZM-182345
SARMsTooltip Selective androgen receptor modulator	Nonsteroidal: 198RL26 ACP-105 AC-262,536 Acetothiolutamide Acetoxolutamide Andarine (acetamidoxolutamide, androxolutamide, GTx-007, S-4) BMS-564,929 DTIB Enobosarm (ostarine, MK-2866, GTx-024, S-22) FTBU-1 GLPG-0492 GSK2881078 GSK-4336A GSK-8698 LG121071 (LGD-121071) LGD-2226 LGD-2941 (LGD-122941) LGD-3303 LGD-4033 LY305 JNJ-26146900 JNJ-28330835 JNJ-37654032 OPK-88004 (LY-2452473, TT-701) ORM-11984 PF-06260414 R-1 RU-59063 S-1 S-23 S-40503 S-101479 Vosilasarm Steroidal: EM-9017 MK-0773 TFM-4AS-1 YK-11
Antagonists	Steroidal: 7α-Thioprogesterone 7α-Thiospironolactone 7α-Thiomethylspironolactone 11α-Hydroxyprogesterone 15β-Hydroxycyproterone acetate Abiraterone Abiraterone acetate Allyltestosterone Benorterone BOMT Canrenoic acid Canrenone Chlormadinone acetate Clascoterone Clometerone Cyproheptadine Cyproterone Cyproterone acetate Delanterone Delmadinone acetate Dicirenone Dienogest Drospirenone DU-41165 Edogestrone EM-4350 EM-5854 EM-5855 EM-6537 Epitestosterone Galeterone Guggulsterone Ludaterone Medrogestone Megestrol acetate Mespirenone Metogest Mexrenone Mifepristone Nomegestrol acetate Nordinone Osaterone Osaterone acetate Oxendolone Potassium canrenoate Promegestone Prorenone Rosterolone RU-15328 SC-5233 (spirolactone) Spironolactone Spirorenone Spiroxasone Topterone Trimegestone Trimethyltrienolone (R-2956) Zanoterone Nonsteroidal: 5N-Bicalutamide AA560 Antarlides Arabilin Apalutamide Atraric acid AZD-3514 Bakuchiol Bavdegalutamide BAY-1024767 Bicalutamide Bisphenols (e.g., BADGE, BFDGE, bisphenol A, bisphenol F, bisphenol S) BMS-501949 BMS-570511 BMS-641988 CH5137291 Cimetidine Cioteronel Cyanonilutamide Darolutamide DDT (via metabolite p,p’-DDE) Dieldrin DIMP Endosulfan Enzalutamide EPI-001 Fenarimol Flutamide Hydroxyflutamide Inocoterone Inocoterone acetate Ketoconazole Ketodarolutamide Lavender oil LG-105 LG-120907 LGD-1331 Linuron Masofaniten Methiocarb N-Butylbenzenesulfonamide N-Desmethylapalutamide N-Desmethylenzalutamide Nilutamide ONC1-13B Pentomone PF-998425 Phenothrin Prochloraz Procymidone Proxalutamide Pyrilutamide Ralaniten (EPI-002) Ralaniten acetate (EPI-506) RD-162 Rezvilutamide Ro 2-7239 Ro 5-2537 RU-22930 RU-56187 RU-57073 RU-58642 RU-58841 Seviteronel Thalidomide Topilutamide (fluridil) Valproic acid Vinclozolin YM-580 YM-92088 YM-175735

GPRC6A

Agonists	Cations (incl. aluminium, calcium, gadolinium, magnesium, strontium, zinc) Dehydroandrosterone Dihydrotestosterone Estradiol L-α-Amino acids (incl. L-arginine, L-lysine, L-ornithine) Osteocalcin SHBGTooltip Sex hormone-binding globulin Testosterone