Louis Claude Cadet de Gassicourt

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Louis Claude Cadet de Gassicourt
Born (1731-07-24)24 July 1731
Paris, France
Died 17 October 1799(1799-10-17) (aged 68)
Paris, France
Residence France
Nationality French
Fields Chemist
Institutions Hotel Royal des Invalides in Paris
Alma mater Collège des Quatre-Nations
Known for Synthesis of the first organometallic compound

Louis Claude Cadet de Gassicourt (24 July 1731 – 17 October 1799) was a French chemist who synthesised the first organometalic compound.

He obtained a red liquid by the reaction of potassium acetate with arsenic trioxide. This liquid is known as Cadet's fuming liquid and contains the two compounds cacodyl and cacodyl oxide.

Cadet studied at the Collège des Quatre-Nations and became a pharmacist at the Hotel Royal des Invalides in Paris. He was the brother of the pharmacist Antoine-Alexis Cadet de Vaux.

Marie Thérèse Françoise Boisselet became his wife in 1771, at that time her son, fathered by Louis XV, was two years old. The boy was adopted by Cadet as Charles-Louis Cadet.