Léon-Albert Arnaud (15 February 1853 – 27 March 1915) was a French chemist born in Paris.
From 1872 he worked as an assistant in the laboratory of Michel Eugène Chevreul (1786–1889) at the Muséum national d'histoire naturelle. In 1883 he succeeded François Stanislas Cloez (1817–1883) as aide-naturaliste, and from 1890 to 1915 was chair of applied organic chemistry at the museum. redalyc.org
Arnaud was the first scientist to describe the chemical make-up of tariric acid, an extraction from the glucoside of the "tariri plant" found in Guatemala. and He is also credited with isolating tanghinine, taken from Tanghinia venenifera; (family Apocynaceae), or full Volume IX. p.194 and in 1883 discovered a new alkaloid called cinchonamine.Biographies, titres et travaux des principaux intervenants du destin du Jardin du Roi au Muséum National d'Histoire Naturelle (biography)
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