Cassella Farbwerke Mainkur Aktiengesellschaft
Cassella Farbwerke Mainkur Aktiengesellschaft, known as Cassella for short, was a German chemical and pharmaceutical company with headquarters in Offenbach near Frankfurt am Main. Founded in 1798 in the Frankfurt Jewish quarter by Leopold Cassella, it was one of many predecessor companies of today's Sanofi. Its history is closely tied to its former owners, the prominent Jewish German Gans family.
The company was founded as a spice store inside the Frankfurt Jewish quarter in 1798 by the Jewish businessman Leopold Cassella and his brother-in-law Isaac Elias Reiß, and was originally named Caßel & Reiß. Himself childless, Casella accepted Ludwig Aaron Gans as a partner in 1828, and the company became known as Leopold Cassella & Co. and was owned by the prominent, originally Jewish Gans family of Frankfurt of industrialists and philanthropists. The family converted to Protestantism in the late 19th century and several family members were ennobled. In the 19th century, it primarily traded with dye. In 1870 a dye factory was founded, and the company was renamed Cassella Farbwerke Mainkur. In 1925 Cassella merged into the new IG Farben trust. After World War II the company was reestablished as Cassella Farbwerke Mainkur AG and was acquired by Hoechst AG in 1969. Through subsequent mergers, it later became part of Sanofi.
- Bäumler, Ernst (1988). Die Rotfabriker. Familiengeschichte eines Weltunternehmens (in German). Munich: Piper. ISBN 3-492-10669-2.