18-Methyltestosterone

18-Methyltestosterone
Clinical data

Other names	18-MT; 18-Methylandrost-4-en-17β-ol-3-one; 13β-Ethyl-17β-hydroxy-18-norandrost-4-en-3-one
Drug class	Androgen; Anabolic steroid
Identifiers
IUPAC name (8R,9S,10R,13S,14S,17S)-13-ethyl-17-hydroxy-10-methyl-1,2,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
CAS Number	7381-64-8^Y
PubChem CID	54393203
UNII	8MFH3FAP6D
Chemical and physical data
Formula	C₂₀H₃₀O₂
Molar mass	302.458 g·mol⁻¹
3D model (JSmol)	Interactive image
SMILES CC[C@]12CC[C@H]3[C@H]([C@@H]1CC[C@@H]2O)CCC4=CC(=O)CC[C@]34C
InChI InChI=1S/C20H30O2/c1-3-20-11-9-16-15(17(20)6-7-18(20)22)5-4-13-12-14(21)8-10-19(13,16)2/h12,15-18,22H,3-11H2,1-2H3/t15-,16+,17+,18+,19+,20+/m1/s1 Key:VIDBKWVIQCRYHG-HLXURNFRSA-N

18-Methyltestosterone (18-MT) is an androgen/anabolic steroid (AAS) which was never marketed.^[1]^[2]^[3] Along with 19-nortestosterone (nandrolone) and 17α-ethynyltestosterone (ethisterone), it is a parent structure of a number of progestogens and AAS. These include the progestogens levonorgestrel (17α-ethynyl-18-methyl-19-nortestosterone) and its derivatives (e.g., desogestrel, gestodene, norgestimate, gestrinone) as well as AAS such as norboletone (17α-ethyl-18-methyl-19-nortestosterone) and tetrahydrogestrinone (THG; δ^9,11-17α-ethyl-18-methyl-19-nortestosterone).

References

^ Baddeley GV, Carpio H, Edwards JA (1966). "Steroids. CCLXXXVIII.1The Synthesis of 18-Methylprogesterone and Related Compounds2". The Journal of Organic Chemistry. 31 (4): 1026–1032. doi:10.1021/jo01342a009. ISSN 0022-3263.
^ Strike DP, Herbst D, Smith H (May 1967). "Totally Synthetic Hormones. XVI.(1) The Conversion of Estr-4-en-17-ol to Testosterone and the Total Synthesis of Some 18-Methylandrostane and 18-Methylpregnane Derivatives". Journal of Medicinal Chemistry. 10 (3): 446–451. doi:10.1021/jm00315a034. PMID 22185150.
^ Rees R, Strike DP, Smith H (September 1967). "Totally synthetic steroid hormones. XVII. Further studies on the synthesis of dl-18-methylandrostane and dl-18-methylpregnane derivatives". Journal of Medicinal Chemistry. 10 (5): 783–789. doi:10.1021/jm00317a006. PMID 6048483.

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 EPI-7386 Fenarimol Flutamide Hydroxyflutamide Inocoterone Inocoterone acetate Ketoconazole Ketodarolutamide Lavender oil LG-105 LG-120907 LGD-1331 Linuron 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

See also: Receptor/signaling modulators; Androgens and antiandrogens; Estrogen receptor modulators; Progesterone receptor modulators; List of androgens and anabolic steroids

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