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Marion Laboratories

For profit

Phase 1 Phase 2 Phase 3 Phase 4

Acquired by Marion Merrell Dow → Hoechst Marion Roussel → Aventis → Sanofi-Synthelabo → Sanofi-Aventis on Jan 1, 1989

Timeline

1960s

Jan 1, 1964
Marion Laboratories— Founded

1980s

Jan 1, 1989
Marion Merrell Dow— Acquired By

2000s

Jan 1, 2004
Sanofi-Aventis— Now

Details

Founded: Kansas City, MO, US Jan 1, 1964