Cas no 1228-72-4 (17-Epiestriol)

17-Epiestriol is a stereoisomer of estriol, a naturally occurring estrogen hormone. This compound is of interest in biochemical and pharmaceutical research due to its structural similarity to estriol and potential interactions with estrogen receptors. Its distinct stereochemistry may influence binding affinity and metabolic pathways, making it a valuable reference standard in studies of estrogenic activity, receptor specificity, and hormone metabolism. 17-Epiestriol is utilized in analytical applications, including chromatography and mass spectrometry, to differentiate between estrogen isomers. Its high purity and well-characterized properties ensure reliability in research settings, particularly in endocrinology and steroid hormone analysis.
17-Epiestriol structure
17-Epiestriol structure
Product Name:17-Epiestriol
CAS No:1228-72-4
MF:C18H24O3
MW:288.381365776062
CID:164778
PubChem ID:256737
Update Time:2025-11-01

17-Epiestriol Chemical and Physical Properties

Names and Identifiers

    • Estra-1,3,5(10)-triene-3,16,17-triol,(16a,17a)-
    • 17-Epiestriol
    • 16a,17a-Estriol
    • 16a-Hydroxy-17a-estradiol
    • 16ALPHA-HYDROXY-17ALPHA-ESTRADIOL
    • 17a-Estriol
    • 17-EPIESTRIOL (16ALPHA,17ALPHA)
    • 17-epioestriol
    • epi-Oestriol
    • DTXSID00858947
    • NS00069550
    • LMST02010049
    • 17alpha-Estriol
    • (16alpha,17alpha)-estra-1(10),2,4-triene-3,16,17-triol
    • (8R,9S,13S,14S,16R,17S)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,16,17-triol
    • UNII-4G7IHY560Z
    • (8R,9S,13S,14S,16R,17S)-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,16,17-triol
    • Estra-1,3,5(10)-triene-3,16alpha,17alpha-triol (17-epi-Estriol)
    • 4G7IHY560Z
    • (16alpha,17alpha)-Estra-1,3,5(10)-Triene-3,16,17-Triol
    • estra-1(10),2,4-triene-3,16alpha,17alpha-triol
    • BIDD:ER0026
    • 16.ALPHA.,17.ALPHA.-ESTRIOL
    • DB07702
    • 16alpha,17alpha-estriol
    • SCHEMBL223226
    • 17.ALPHA.-ESTRIOL
    • 1,3,5(10)-Estratriene-3,16alpha,17alpha-triol
    • Estriol Impurity E
    • PD005539
    • AKOS040755521
    • ESTRA-1,3,5(10)-TRIENE-3,16,17-TRIOL, (16.ALPHA.,17.ALPHA.)-
    • NSC 84051
    • 1228-72-4
    • CHEMBL1232445
    • CHEBI:42156
    • NSC84051
    • (1S,2R,3aS,3bR,9bS,11aS)-11a-methyl-1H,2H,3H,3aH,3bH,4H,5H,9bH,10H,11H,11aH-cyclopenta[a]phenanthrene-1,2,7-triol
    • MFCD00069500
    • Estra-1,3,5(10)-triene-3,16?,17?-triol (17-epi-Estriol)
    • NSC-84051
    • Estra-1,3,5(10)-triene-3,16a,17a-triol
    • Q27096920
    • E3O
    • 3,16alpha,17alpha-Trihydroxy-1,3,5(10)-estratriene
    • 17-epi-Estriol
    • (9beta,13alpha,14beta,16alpha,17alpha)-estra-1(10),2,4-triene-3,16,17-triol
    • Estra-1,3,5(10)-triene-3,16,17-triol, (16alpha,17alpha)-
    • 16.ALPHA.-HYDROXY-17.ALPHA.-ESTRADIOL
    • ESTRA-1,3,5(10)-TRIENE-3,16.ALPHA.,17.ALPHA.-TRIOL
    • HY-163712
    • CS-1100827
    • MDL: MFCD00069500
    • Inchi: 1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13-,14-,15+,16-,17-,18+/m1/s1
    • InChI Key: PROQIPRRNZUXQM-PNVOZDDCSA-N
    • SMILES: O[C@@H]1[C@@H](C[C@H]2[C@@H]3CCC4C=C(C=CC=4[C@H]3CC[C@@]21C)O)O

Computed Properties

  • Exact Mass: 288.17300
  • Monoisotopic Mass: 288.17254462g/mol
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 3
  • Hydrogen Bond Acceptor Count: 3
  • Heavy Atom Count: 21
  • Rotatable Bond Count: 0
  • Complexity: 411
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 6
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • XLogP3: 2.5
  • Topological Polar Surface Area: 60.7?2

Experimental Properties

  • Melting Point: 239-241°C
  • PSA: 60.69000
  • LogP: 2.58000

17-Epiestriol Security Information

  • WGK Germany:3

17-Epiestriol Pricemore >>

Related Categories No. Product Name Cas No. Purity Specification Price update time Inquiry
TRC
E586510-2.5mg
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$ 244.00 2023-09-07
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$1409.00 2023-05-18
1PlusChem
1P000JZ2-1mg
Estra-1,3,5(10)-triene-3,16,17-triol, (16α,17α)-
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$166.00 2025-02-18
1PlusChem
1P000JZ2-5mg
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$621.00 2023-12-25
A2B Chem LLC
AA25086-1mg
Estra-1,3,5(10)-triene-3,16,17-triol, (16α,17α)-
1228-72-4 ≥95%
1mg
$106.00 2024-04-20
A2B Chem LLC
AA25086-5mg
Estra-1,3,5(10)-triene-3,16,17-triol, (16α,17α)-
1228-72-4 ≥95%
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$469.00 2024-04-20

17-Epiestriol Related Literature

Additional information on 17-Epiestriol

Professional Introduction to Compound with CAS No 1228-72-4 and Product Name 17-Epiestriol

Compound with the CAS number 1228-72-4 is a significant chemical entity that has garnered considerable attention in the field of pharmaceutical research and development. This compound, more specifically identified by the product name 17-Epiestriol, is a derivative of estrogen and has shown promising potential in various biological and therapeutic applications. The unique structural configuration of 17-Epiestriol distinguishes it from other estrogens, making it a subject of intense study for its distinct pharmacological properties.

The chemical structure of 17-Epiestriol involves a specific epimerization at the C17 position, which alters its interaction with estrogen receptors in the body. This modification leads to a different pharmacokinetic profile compared to native estrogens, potentially offering improved efficacy and reduced side effects. Recent advancements in biochemical research have highlighted the importance of such structural modifications in developing next-generation therapeutics.

In the realm of medical science, 17-Epiestriol has been explored for its potential applications in treating various hormonal disorders and cancers. Studies have demonstrated its ability to selectively bind to estrogen receptors, particularly in breast cancer cells, where it can modulate signaling pathways involved in tumor growth and progression. The compound's ability to exhibit both agonistic and antagonistic effects on estrogen receptors makes it a versatile candidate for therapeutic intervention.

One of the most compelling aspects of 17-Epiestriol is its role in preclinical research related to menopausal symptoms management. Traditional estrogen therapies often come with significant side effects, including an increased risk of thromboembolic events and certain types of cancer. 17-Epiestriol, however, has shown promise in mitigating these risks while still providing relief from menopausal discomforts such as hot flashes and osteoporosis. This has positioned it as a potential alternative for patients seeking hormone replacement therapy with fewer adverse effects.

Recent clinical trials have begun to shed light on the therapeutic potential of 17-Epiestriol in treating osteoporosis. The compound's ability to stimulate bone formation by interacting with estrogen receptors has been observed to enhance bone density in postmenopausal women. This effect is attributed to its ability to activate bone-forming cells (osteoblasts) while inhibiting bone-resorbing cells (osteoclasts), thereby creating a favorable environment for bone health improvement.

The pharmacological profile of 17-Epiestriol also extends to its anti-inflammatory and immunomodulatory properties. Research indicates that the compound can modulate immune responses by influencing cytokine production and reducing inflammation-related markers. This makes it a promising candidate for developing treatments for autoimmune diseases and chronic inflammatory conditions where estrogen receptor signaling plays a critical role.

In conclusion, the compound with CAS no 1228-72-4, known by the product name 17-Epiestriol, represents a significant advancement in pharmaceutical chemistry. Its unique structural properties and diverse biological activities position it as a valuable tool in both preclinical and clinical research. As ongoing studies continue to uncover new applications and mechanisms of action, 17-Epiestriol is poised to become an important therapeutic agent in managing various medical conditions associated with estrogen receptor signaling.

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