Acquisition history

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The following is an illustration of the company's major mergers and acquisitions and historical predecessors (this is not a comprehensive list):

Sanofi
Sanofi–Aventis
Aventis
(Merged 2004)
Rhône-Poulenc
(Merged 1999)

Rorer

Centeon

Pasteur Merieux

Rhône-Poulenc Agro

Rhône-Poulenc Animal Nutrition

Merial

Rhodia

Hoechst Marion Roussel

Hoechst Marion Roussel

AgrEvo

HR Vet

Dade Behring

Centeon

Celanese

Messer

Aventis Cropscience
(Spun off 2000)

Sanofi-Synthélabo
(Merged 1999)
Sanofi

Sanofi
(Founded 1973 as subsiduary of Elf Aquitaine)

Sterling Winthrop
(Acq 1994)

Synthélabo

Laboratoires Dausse
(Founded 1834, merged 1970)

Robert & Carrière
(Founded 1899, merged 1970)

Zentiva
(Acq 2008)

Sicomed SA Bucharest
(Acq 2005)

Leciva Slovakofarma
(Acq 2003)

Medley Farma
(Acq 2009)

Chattem
(Acq 2010)

Nepentes Pharma
(Acq 2010)

BMP Sunstone Corporation
(Acq 2010)