• 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

  • V9200

    VX-950

    NS3/4A serine protease inhibitor.

    ≥98%
  • A4678

    Alternariol-9-methyl Ether

    Mycotoxin produced by Alternaria; oxidative pho...

    ≥98%
  • L0362

    Lapatinib free base

    Inhibitor of EGFR/HER2 (ErbB2).

    ≥99%
  • A5283

    [Sar1]-Angiotensin II

    Peptide, derivative of AT II, involved in vasoc...

    ≥95%
  • O9256

    16-Oxocafestol

    Synthetic cafestol derivative.

    ≥97%
  • M1879

    Metoprolol Tartrate

    β1-adrenergic antagonist.

    ≥98%
  • S8144

    Sulfadoxine

    Sulfonamide; dihydropteroate synthase inhibitor...

    ≥98%
  • F4584

    Fluphenazine Hydrochloride

    Piperazine; FIASMA, D2 antagonist, hERG K+ chan...

    ≥97%
  • F0150

    Famotidine

    Histamine H2 antagonist, GSK-3β inhibitor.

    ≥98%
  • A5217

    trans-Anethole

    Phenylpropene derivative found in essential oil...

    ≥98%
  • C1718

    Cepharanthine, 95%

    Alkaloid found in Stephania.

    ≥95%
  • M7200

    MS436

    BRD4 inhibitor.

    ≥99%
  • I7757

    Itopride Hydrochloride

    AChE inhibitor, D2 antagonist.

    ≥98%
  • S4932

    SMI-4a

    Thiazolidine; Pim kinase inhibitor.

    ≥99%
  • L9600

    LY-2090314

    GSK-3 inhibitor.

    ≥98%
  • R3476

    RITA

    p53 activator.

    ≥98%
  • A4675

    Alternariol

    Mycotoxin produced by Alternaria; topoisomerase...

    ≥98%
  • I4934

    Imipenem Monohydrate

    Carbapenem β-lactam; penicillin binding protei...

    ≥98%
  • K040007

    KB-0742

    CDK9 inhibitor.

    ≥98%
  • A5272

    Angiotensin, dog/rat

    Peptide, derivative of AT I, cleavage product o...

    ≥95%

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