• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Gestrinone

Gestrinone

Product ID G1975
Cas No. 16320-04-0
Purity ≥98%
Product Unit SizeCostQuantityStock
25 mg $92.00 Please Inquire
100 mg $194.00 Please Inquire
500 mg $817.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Gestrinone is a synthetic anti-progestin hormone that acts as an antagonist at estrogen and progesterone receptors and as an agonist at androgen receptors. Gestrinone is primarily used to treat endometriosis in clinical settings; it is also in clinical trials for potential use as an emergency contraceptive. This compound also exhibits some potential anticancer activity as well, downregulating expression of the progesterone receptor, estrogen receptor, and p-Src, inhibiting growth of uterine leiomyoma cells.

Product Info

Cas No.

16320-04-0

Purity

≥98%

Formula

C21H24O2

Formula Wt.

308.41

Chemical Name

(17a)-13-Ethyl-17-hydroxy-18,19-dinorpregna-4,9,11-trien-20-yn-3-one

IUPAC Name

(8S,13S,14S,17R)-13-ethyl-17-ethynyl-17-hydroxy-1,2,6,7,8,14,15, 16-octahydrocyclopenta[a]phenanthren-3-one

Synonym

13b-ethyl-17a-ethynyl-17b-hydroxy-4,9,11-gonatrien-3-one, 13b-ethyl-17a-ethynyl-D4,9,11-gonatriene-17b-ol-3-one, ethylnorgestrienone

Melting Point

154°C

Appearance

Yellowish crystalline powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

G1975 MSDS PDF

Info Sheet

G1975 Info Sheet PDF

References

Zhu Y, Zhang T, Xie S, et al. Gestrinone inhibits growth of human uterine leiomyoma may relate to activity regulation of ERα, Src and P38 MAPK. Biomed Pharmacother. 2012 Dec;66(8):569-77. PMID: 23102719.

Wu S, Dong J, Cong J, et al. Gestrinone compared with mifepristone for emergency contraception: a randomized controlled trial. Obstet Gynecol. 2010 Apr;115(4):740-4. PMID: 20308833.

Ohno Y, Kitagawa I, Tamura H, et al. Antiestrogenic effect of gestrinone as an inhibitor of [3H]-estradiol binding to nuclear type II sites. Gynecol Obstet Invest. 1991;31(2):97-101. PMID: 2037266.

Venturini PL, Bertolini S, Brunenghi MC, et al. Endocrine, metabolic, and clinical effects of gestrinone in women with endometriosis. Fertil Steril. 1989 Oct;52(4):589-95. PMID: 2806598.

Tamaya T, Fujimoto J, Watanabe Y, et al. Gestrinone (R2323) binding to steroid receptors in human uterine endometrial cytosol. Acta Obstet Gynecol Scand. 1986;65(5):439-41. PMID: 3490730.

Kauppila A, Isomaa V, Rönnberg L, et al. Effect of gestrinone in endometriosis tissue and endometrium. Fertil Steril. 1985 Oct;44(4):466-70. PMID: 2996949.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • B242042

    BGB-283

    Dual RAF/EGFR inhibitor.

    ≥98%
  • M568262

    Mogrol

    Triterpenoid

    ≥99%
  • T1844

    Telbivudine

    Nucleoside (thymidine) analog; DNA chain termin...

    ≥98%
  • M4200

    MK-0752

    γ-Secretase inhibitor.

    ≥98%
  • S3033

    Shikimic Acid

    Cyclohexanecarboxylic acid found in various pla...

    ≥98%
  • Y4800

    YM-155

    Survivin inhibitor.

    ≥99%
  • M2077

    1-Methoxy-5-methylphenazinium Methyl Sulfate

    Electron carrier used to study dehydrogenase el...

    ≥98%
  • T1605

    Tebuconazole

    Triazole; 14-α demethylase inhibitor, voltage-...

    ≥98%
  • B7977

    Butylated Hydroxytoluene

    Antioxidative food and cosmetics additive.

    ≥99%
  • W7200

    WS3

    Islet β cell proliferation stimulator.

    ≥98%
  • M7528

    α-Melanocyte Stimulating Hormone

    Endogenous peptide hormone derived from POMC, i...

    ≥98%
  • T0251

    Tamsulosin Hydrochloride

    α1-adrenergic antagonist.

    ≥98%
  • M4652

    MLN8237

    AurKA inhibitor.

    ≥98%
  • O938582

    41-Oxo-rapamycin

    Impurity of rapamycin

    ≥95%
  • V014451

    Valiltramiprosate

    beta-Amyloid anti-oligomer and aggregation inhi...

    ≥99%
  • A0025

    17-Allylaminogeldanamycin

    Geldanamycin derivative; HSP90 inhibitor.

    ≥97%
  • F4583

    Flupirtine Maleate

    Kv7 K+ channel activator, NMDA antagonist, GABA...

    ≥98%
  • F5868

    Formoterol Fumarate Dihydrate

    β2-adrenergic agonist.

    ≥98%
  • T1968

    Terpinen-4-ol

    Monoterpene found in various plant sources.

    ≥98%
  • C000171

    C-171

    STING inhibitor

    ≥98%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only