# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/russell-earl-marker
# Generated: 2026-08-14T15:18:36.175Z

schema: https://schema.org/Person
url: "https://fame.am/person/russell-earl-marker"
name: "Russell Earl Marker"
slug: "russell-earl-marker"
description: "Russell Earl Marker was an American chemist who invented the octane rating system when he was working at the Ethyl Corporation. Later in his career, he went on to found a steroid industry in Mexico when he successfully made semisynthetic progesterone from chemical constituents found in Mexican yams in a process known as Marker degradation. This eventually led to the development at Syntex of the combined oral contraceptive pill and synthetic cortisone – and to the development of the Mexican barbasco trade."
tagline: "American chemist (1902-1995)"
gender: "male"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1902-03-12"
deathDate: "1995-03-03"
livingStatus: "DECEASED"
scores:
  popularity:           42.73
  momentum:             4.375
  historical:           5.879086666666668
  currentAttention:     0
  sourceConfidence:     35
  profileCompleteness:  45
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://en.wikipedia.org/wiki/Russell_Earl_Marker"
    title: "Russell Earl Marker"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%B1%D9%88%D8%B3%D9%84_%D9%85%D8%A7%D8%B1%D9%83%D8%B1"
    title: "روسل ماركر"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Russell_Marker"
    title: "Russell Marker"
    type:  "WIKIPEDIA"
  - url: "https://zh.wikipedia.org/wiki/%E7%BE%85%E7%B4%A0%C2%B7%E5%8E%84%E7%88%BE%C2%B7%E9%A6%AC%E5%85%8B"
    title: "羅素·厄爾·馬克"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Russell_Earl_Marker"
    title: "Russell Earl Marker"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%A9%E3%83%83%E3%82%BB%E3%83%AB%E3%83%BB%E3%83%9E%E3%83%BC%E3%82%AB%E3%83%BC"
    title: "ラッセル・マーカー"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q7381482"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump