Wilhelm Lossen

Wilhelm Clemens Lossen (8 May 1838 in Kreuznach – 29 October 1906 in Aachen) was a German chemist.

[1] From 1857 he studied chemistry at the University of Giessen, then continued his education at Göttingen as a pupil of Friedrich Wöhler.

The eponymous Lossen rearrangement, refers to the decomposition of hydroxamic acids or their derivatives to yield isocyanates.

After the untimely death of Niemann in 1861, he continued research of the drug and was able to determine its proper chemical formula.

The two scientists also performed studies on the effect of cocaine on mucous membranes.