Chemicals and Drugs

Alkylated Estrogenic Steroids

Estrogenic STEROIDS with aliphatic hydrocarbon chain substitution on C17 or other position. 17-alpha-ALKYLATION renders the molecule more stable, resistant to metabolic degradation, and improves oral efficacy. Examples of synthetic alkyl estrogens include ETHINYL ESTRADIOL and MESTRANOL. Substitutions at other sites generates antiestrogenic and cytotoxic properties.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Estrogenic STEROIDS with aliphatic hydrocarbon chain substitution on C17 or other position. 17-alpha-ALKYLATION renders the molecule more stable, resistant to metabolic degradation, and improves oral efficacy. Examples of synthetic alkyl estrogens include ETHINYL ESTRADIOL and MESTRANOL. Substitutions at other sites generates antiestrogenic and cytotoxic properties.

MeSH Record

Classification

Broader headings

Narrower headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

Drug Class

Pharmacological Action

MeSH Record

Synonyms

2 entry terms
  • Alkyl Estrogenic Steroids
  • Estrogenic Steroids, Alkylated

MeSH Record

Aspects Covered

27 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Record

History Note

2004

MeSH Record

Previous Indexing

  • Ethinyl Estradiol (1968-2003)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Alkylated Estrogenic Steroids. Medical Subject Headings (MeSH). 2026. Unique ID D042782. http://id.nlm.nih.gov/mesh/2026/D042782
  2. Alkylated Estrogenic Steroids. In: Wikidata. https://www.wikidata.org/wiki/Q78439231