• 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
17-α-Ethynylestradiol

17-α-Ethynylestradiol

Product ID E7731
Cas No. 57-63-6, 77538-56-8, 406932-93-2, 1050678-65-3
Purity ≥99%
Product Unit SizeCostQuantityStock
1 g $81.00 In stock
5 g $359.20 In stock
10 g $574.80 In stock
Bulk Quote

Quicklinks

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

Description

17-α-ethynylestradiol is a synthetic estrogen receptor (ER) agonist clinically used in contraceptive medications. In pregnant rats, 17-α-ethynylestradiol decreases platelet activating factor acetylhydrolase activity, inducing premature birth. 17-α-ethynylestradiol also displays weak antioxidative activity in lipid peroxidation assays in liver microsomes. Both acute and chronic exposure of wildlife (particularly fish) to 17-α-ethynylestradiol leads to feminization of males (through the induction of vitellogenin production), inhibiting fertility.

Product Info

Cas No.

57-63-6, 77538-56-8, 406932-93-2, 1050678-65-3

Purity

≥99%

Formula

C20H24O2

Formula Wt.

296.40

Chemical Name

(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-7,8,9,11,12,14,15, 16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol

IUPAC Name

(8R,9S,13S,14S,17R)-17-ethynyl-13-methyl-7,8,9,11,12,14,15, 16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol

Synonym

Ethinylestradiol

Melting Point

182-183°C

Appearance

White to off white powder

Shipping and Storage

Store Temp

Ambient

Ship Temp

Ambient

Downloads

MSDS

E7731 MSDS PDF

Info Sheet

E7731 Info Sheet PDF

References

Kidd KA, Blanchfield PJ, Mills KH, et al. Collapse of a fish population after exposure to a synthetic estrogen. Proc Natl Acad Sci U S A. 2007 May 22;104(21):8897-901. PMID: 17517636.

Schultz IR, Skillman A, Nicolas JM, et al. Short-term exposure to 17 alpha-ethynylestradiol decreases the fertility of sexually maturing male rainbow trout (Oncorhynchus mykiss). Environ Toxicol Chem. 2003 Jun;22(6):1272-80. PMID: 12785584.

Yasuda K, Furukawa M, Johnston JM. Effect of estrogens on plasma platelet-activating factor acetylhydrolase and the timing of parturition in the rat. Biol Reprod. 1996 Jan;54(1):224-9. PMID: 8838020.

Lacort M, Leal AM, Liza M, et al. Protective effect of estrogens and catecholestrogens against peroxidative membrane damage in vitro. Lipids. 1995 Feb;30(2):141-6. PMID: 7769970.

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

  • C9879

    Cytochalasin B

    Mycotoxin produced by Aspergillus; actin polyme...

    ≥98%
  • S584778

    Sotorasib

    KRAS inhibitor

    ≥99%
  • I0480

    Ibudilast

    PDE3/5 inhibitor, LTD4 antagonist.

    ≥98%
  • A4441

    Allicin, aqueous solution

    Organosulfur found in garlic; Kir K+ channel ac...

    ≥98%
  • M9368

    Myristicin

    Allylbenzene found in spices and umbelliferous ...

    ≥98%
  • C4534

    Clindamycin Palmitate Hydrochloride

    Lincosamide; ribosomal translocation and protei...

    ≥98%
  • S0381

    Sauvagine

    CRF-related peptide found in amphibians.

    ≥98%
  • F5872

    N-formyl-Nle-Leu-Phe-Nle-Tyr-Lys

    Peptide, involved in neutrophil activation; FPR...

    ≥95%
  • T0103

    Taxol Side Chain Diol

    Side chain attached to various taxanes.

    ≥98%
  • S0344

    Salermide

    SIRT inhibitor.

    ≥98%
  • K2412

    KGDS

    Synthetic peptide, fibrinogen derivative; glyco...

    ≥95%
  • P3592

    Pixantrone Dimaleate

    Aza-anthracenedione, DNA intercalator; topoisom...

    ≥98%
  • L0077

    Latrunculin B

    Thiazolidinone macrolide found in the Red Sea s...

    ≥98%
  • E6259

    Epoxiconazole

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

    ≥95%
  • R5774

    Roscovitine

    CDK inhibitor, L-type Ca2+ channel blocker.

    ≥98%
  • G1853

    Genipin

    Iridoid glycoside found in Gardinia jasminoides...

    ≥99%
  • B3472

    4,4′-(1,1′-Biphenyl-4,4′-diyldioxy)dianiline

    Potential VEGFR2, Met, RET, Axl, Ron, PDGFR, FG...

    ≥98%
  • P0246

    Palomid 529

    mTOR inhibitor.

    ≥98%
  • N3378

    S-Nitrosoglutathione

    NO donor.

    ≥95%
  • A5334

    Anisodamine

    Tropane alkaloid found in Solanaceae plants; α...

    ≥97%

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

©2025 LKT Laboratories, All Rights Reserved - Products for research use only