Norgestrel

InChI=1S/C21H28O2/c1-3-20-11-9-17-16-8-6-15(22)13-14(16)5-7-18(17)19(20)10-12-21(20,23)4-2/h2,13,16-19,23H,3,5-12H2,1H3/t16-,17+,18+,19-,20-,21?/m0/s1^Y
Key:WWYNJERNGUHSAO-CULCCENASA-N^Y

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Norgestrel (INN, USAN, BAN, JAN) (brand names Logynon, Nordette, Eugynon, Microgynon, Ovran, Ovranette, Trinordiol, numerous others) is a steroidal progestin that has been used in hormonal contraceptives. It is a mixture of two stereoisomers, dextronorgestrel (CAS# 797-64-8 ) and levonorgestrel (CAS# 797-63-7 ).^[1] Only levonorgestrel is biologically active.^[2] Therefore, while some medications may contain dextronorgestrel, they are often labeled in terms of their levonorgestrel content only, ignoring the inert isomer.

Norgestrel has also been used as an emergency contraceptive in the Yuzpe regimen.^[3]

References

↑ Mutschler, Ernst; Schäfer-Korting, Monika (2001). Arzneimittelwirkungen (in German) (8 ed.). Stuttgart: Wissenschaftliche Verlagsgesellschaft. pp. 442f. ISBN 3-8047-1763-2.
↑ Benagiano, G; Carrara, S; Filippi, V (2009). "Safety, efficacy and patient satisfaction with continuous daily administration of levonorgestrel/ethinylestradiol oral contraceptives". Patient preference and adherence 3: 131–43. PMC 2778424. PMID 19936155.
↑ Yuzpe, A. A.; Smith, R. P.; Rademaker, A. W. (1982). "A multicenter clinical investigation employing ethinyl estradiol combined with dl-norgestrel as postcoital contraceptive agent". Fertility and Sterility 37 (4): 508–13. PMID 7040117.

Progestogens and antiprogestogens

Progestogens

Retroprogesterone	Dydrogesterone Trengestone

17α-Hydroxyprogesterone	Algestone Algestone acetophenide Chlormadinone acetate Cyproterone acetate Delmadinone acetate Hydroxyprogesterone acetate Hydroxyprogesterone caproate Hydroxyprogesterone heptanoate Medroxyprogesterone Medroxyprogesterone acetate^# Megestrol acetate Melengestrol acetate Other substitutions: Haloprogesterone (17α-bromo) Medrogestone (17α-methyl) Proligestone (14α,17α-propylidenedioxy)

19-Norprogesterone	Demegestone Gestonorone caproate Nestorone Nomegestrol acetate Norgestomet Promegestone Trimegestone

17α-Ethynyltestosterone	Dimethisterone Ethisterone

19-Nortestosterone	Allylestrenol Altrenogest Desogestrel Dienogest Etonogestrel Etynodiol diacetate Gestodene Gestrinone Levonorgestrel^# Lynestrenol Norelgestromine Norethandrolone Norethisterone (norethindrone)^# Norethisterone acetate Norethisterone enanthate Noretynodrel Norgesterone Norgestimate Norgestrel Norgestrienone Normethandrone (methylestrenolone) Norvinisterone Quingestanol acetate Tibolone Trenbolone

17α-Spirolactone	Canrenone Drospirenone Potassium canrenoate Spironolactone

Others	Progesterone Non-steroidal: Tanaproget^§

SPRMs /
antiprogestogens

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

Androgenics

Receptor
(ligands)

Agonists	4-Chlordehydromethyltestosterone 4-Hydroxytestosterone 5α-Androst-1-ene-3,17-dione 7β-Hydroxyepiandrosterone 11-Ketotestosterone 17-((1-Oxoheptyl)oxy)androstan-3-one 17-((1-Oxopentyl)oxy)androstan-3-one 17-(1-Oxopropoxy)androstan-3-one 17β-Hydroxyandrost-2-ene-2-carbonitrile 19-Norandrostenediol 19-Norandrostenedione 19-Norandrosterone 19-Nordehydrotestosterone Δ¹-Androstenediol Δ¹-Testosterone Δ^1,4-Androstenedione Δ⁴-Androstenediol Δ⁴-Androstenedione Δ^4-Tibolone Δ⁴-Androstenediol Δ⁴-Androstenedione Adrenosterone Androisoxazole Androstanolone Bolandiol Bolasterone Bolazine Boldenone Boldione Bolenol Bolmantalate Calusterone Cl-4AS-1 Clostebol Cloxotestosterone Cortexolone 17α-propionate Danazol Desogestrel Desoxymethyltestosterone DHEA DHEA sulfate Dihydrotestosterone Drostanolone Enestebol Epitiostanol Ethisterone Ethyldienolone Ethylestrenol Fluoxymesterone Formebolone Furazabol Hexabolan Hydroxystenozole Levonorgestrel Mebolazine Medroxyprogesterone acetate Mepitiostane Mesabolone Mestanolone Mesterolone Metandienone/Methandrostenolone Metenolone Metenolone acetate Metenolone enanthate Methandriol Methandriol propionate Methasterone Methylestrenolone Methyltestosterone Metribolone Mibolerone Nandrolone Nandrolone caproate Nandrolone cypionate Nandrolone cyclohexane carboxylate Nandrolone cyclohexylpropionate Nandrolone cyclotate Nandrolone decanoate Nandrolone furylpropionate Nandrolone hexyloxyphenylpropionate Nandrolone hydrogen succinate Nandrolone laurate Nandrolone phenylpropionate Nandrolone propionate Nandrolone undecyclate Norboletone Norclostebol Norethandrolone Norethisterone Norgestrel Oxabolone Oxabolone cypionate Oxandrolone Oxendolone Oxymesterone Oxymetholone Penmesterol Propetandrol Quinbolone Quingestanol acetate Roxibolone Silandrone Stanozolol Stenbolone Stenbolone acetate Testolactone Testosterone Testosterone acetate Testosterone capropate Testosterone cypionate Testosterone decanoate Testosterone enanthate Testosterone isocaproate Testosterone ketolaurate Testosterone nicotinate Testosterone phenylpropionate Testosterone propionate Testosterone undecanoate Tetrahydrogestrinone Thiomesterone Tibolone Tiomesterone Trenboloneca Trenbolone acetate Trestolone

Mixed (SARMs)	AC-262,356 Andarine BMS-564,929 Enobosarm (ostarine) LGD-2226 LGD-3303 LGD-4033 RAD140 S-23 S-40503 TFM-4AS-1

Antagonists	3α-Hydroxytibolone 3β-Hydroxytibolone Abiraterone Abiraterone acetate Apalutamide AZD-3514 Bisphenols (e.g., BADGE, BFDGE, bisphenol A, bisphenol F, bisphenol S) Benorterone Bicalutamide BMS-641,988 BOMT Canrenoic acid Canrenone Chlormadinone acetate Cimetidine Cioteronel Clometerone Cyproterone Cyproterone acetate Delanterone DDT (via metabolite p,p’-DDE) Dieldrin Dienogest Drospirenone Endosulfan Enzalutamide EPI-001 Epitestosterone Fenarimol Flutamide Galeterone Guggulsterone Hydroxyflutamide Inocoterone Ketoconazole Lavender oil Linuron Megestrol acetate Mespirenone Methiocarb Metogest Mifepristone Nilutamide Nomegestrol Nordinone Norgestimate ODM-201 ONC1-13B ORM-15341 Osaterone Oxendolone PF-998425 Potassium canrenoate Prochloraz Procymidone R-2956 Rosterolone RU-58642 RU-58841 Spironolactone Topilutamide (fluridil) Topterone Valproic acid Vinclozolin VT-464 Zanoterone

Enzyme

Modulators	See here instead (modulators of 20,22-desmolase, 17α-hydroxylase/17,20-lyase, 3β-HSD, 17β-HSD, 5α-reductase, and aromatase).

Others

Precursors/prohormones	Cholesterol 22R-Hydroxycholesterol 20α,22R-Dihydroxycholesterol Pregnenolone Pregnenolone sulfate 17-Hydroxypregnenolone Progesterone 17-Hydroxyprogesterone 11-Deoxycortisol (cortodoxone) DHEA DHEA sulfate Δ⁵-Androstenediol Δ⁴-Androstenedione

Indirect	Antigonadotropins (e.g., estrogens, progestogens, prolactin) GnRH agonists (e,g, GnRH, leuprorelin) GnRH antagonists (e.g., cetrorelix) Gonadotropins (e.g., FSH, hCG, LH) Kisspeptin Plasma proteins (ABP, albumin, SHBG)

See also: Estrogenics • Glucocorticoids • Mineralocorticoids • Progestogenics

Progestogenics

Receptor
(ligands)

Agonists	3,8-Dihydrodiligustilide 5α-Dihydroprogesterone 20α-Dihydroprogesterone 11-Dehydroprogesterone 11-Deoxycorticosterone 17α-Hydroxyprogesterone 19-Norprogesterone Δ^4-Tibolone Algestone Algestone acetonide Algestone acetophenide Allylestrenol Altrenogest Amadinone Amadinone acetate Anagestone Anagestone acetate Canrenoic acid Canrenone Chlormadinone Chlormadinone acetate Cingestol Cismadinone Cismadinone acetate Clogestone Clogestone acetate Clomegestone Clometerone Cyproterone acetate Danazol Delmadinone Delmadinone acetate Demegestone Desogestrel Dienogest Dimethisterone Diosgenin Drospirenone Dydrogesterone Edogesterone Ethisterone Ethynerone Etonogestrel Etynodiol Etynodiol diacetate Flugestone Flugestone acetate Gestaclone Gestadienol Gestodene Gestonorone Gestonorone caproate Gestovister Gestrinone Gestronol Guggulsterone Haloprogesterone Hydromadinone Hydroxyprogesterone acetate Hydroxyprogesterone caproate Hydroxyprogesterone heptanoate Hydroxyprogesterone hexanoate Levonorgestrel Lutenyl Lynestrenol Medrogestone Medroxyprogesterone Medroxyprogesterone acetate Megestrol Megestrol acetate Melengestrol Melengestrol acetate Mespirenone Methylestrenolone Methynodiol Methynodiol diacetate Mometasone furoate Nandrolone Nestorone Nomegestrol Nomegestrol acetate Norelgestromin Norethisterone (norethindrone) Norethisterone acetate Norethisterone acetate oxime Norethisterone enanthate Noretynodrel Norgesterone Norgestimate Norgestomet Norgestrel Norgestrienone Norvinisterone Org-2058 Oxogestone Oxogestone phenpropionate Pentagestrone Potassium canrenoate Progesterone Proligestone Promegestone Retroprogesterone Riligustilide Quingestanol Quingestanol acetate Quingestrone Segesterone Spironenone Spironolactone Tanaproget Tetrahydrogestrinone Tibolone Tigestol Tosagestin Trengestone Trimegestone ZM-182,345

Mixed (SPRMs)	Apigenin Asoprisnil Asoprisnil ecamate Kaempferol J1042 LG-120,838 Naringenin Syringic acid Telapristone Antagonistic: Mifepristone Org-31710 Org-33628 Ulipristal acetate ZK-137,316

Antagonists	3α-Hydroxytibolone 3β-Hydroxytibolone Aglepristone Lilopristone Lonaprisan Onapristone Toripristone Valproic acid Vilaprisan ZM-150,271 ZM-172,406

Enzyme

Modulators	See here instead (modulators of 20,22-desmolase, 17α-hydroxylase/17,20-lyase, 3β-HSD, and 21-hydroxylase).

Others

Precursors/prohormones	Cholesterol 22R-Hydroxycholesterol 20α,22R-Dihydroxycholesterol Pregnenolone Pregnenolone sulfate 17-Hydroxypregnenolone

Indirect	Antigonadotropins (e.g., estrogens, progestogens, prolactin) GnRH agonists (e,g, GnRH, leuprorelin) GnRH antagonists (e.g., cetrorelix) Gonadotropins (e.g., FSH, hCG, LH) Kisspeptin Plasma proteins (ABP, albumin, SHBG)

See also: Androgenics • Estrogenics • Glucocorticoids • Mineralocorticoids

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