Sanofi was founded in 1973 as a subsidiary of Elf Aquitaine (a French oil company subsequently acquired by Total), when Elf Aquitaine took control of the Labaz group, a pharmaceutical company formed in 1947, by Sociéte Belge de l'Azote et des Produits Chimiques du Marly; Labaz developed benziodarone in 1957. In 1993, Sanofi made a move into the Eastern Europe market by acquiring a controlling interest in Chinoin, a Hungarian drug company that had about US$104 million in sales in 1992. In that same year, Sanofi's made its first significant venture into the U.S., and strengthened its presence in Eastern Europe, by first partnering with Sterling Winthrop and then acquiring the prescription pharmaceuticals business in 1994. Sanofi was incorporated under the laws of France in 1994, as a "société anonyme", a form of limited liability company.