Jean-François Derosne

Shortly after taking over, he had to handle a court case between his mother and Charles-Louis Cadet de Gassicourt.

Cadet de Gassicourt and he were both involved in the Paris Pharmacy Society where they appear to have worked without trouble.

He collaborated with Martin Deschamps on intestinal worms in Vienna and examined the key ingredient in the root of Plumbago.

[1] This was distilled from an acqueous extract of opium and while it showed anti-tussive properties it did not have narcotic effect.

[2][3][4] The work was continued by Armand Séguin and ultimately by Friedrich Sertürner who was able to extract pure alkaloid.