Johann Andersag (better known as Hans Andersag) was a scientist born on February 16, 1902, in Lana, Tyrol, Austria-Hungary (now South Tyrol, Italy), and died August 10, 1955, in Wuppertal, Germany, following bronchial cancer.[1] While working for Bayer AG, he discovered chloroquine, the active ingredient in the malaria drug Resochin.[2] He also first synthesized vitamin B6 with Richard Kuhn, Kurt Westphal, and Gerhardt Wendt. He was awarded a doctorate degree for his dissertation "Synthese des natürlichen Koproporphyrins sowie zweier damit isomerer Porphyrine" at the Technical University Munich on September 9, 1927.

Hans Andersag
Born(1902-02-16)February 16, 1902
DiedAugust 10, 1955(1955-08-10) (aged 53)

He was married to Else Andersag (née Nouvortne). The couple lived with their three daughters Christel, Marianne and Renate on Jaegerhofstrasse 44 in Wuppertal-Elberfeld. Hans Andersag's grave and gravestone are located at the "Alter Lutherischer Friedhof an der Hochstrasse" in Wuppertal-Elberfeld.

See also



  1. ^ Krafts K, Hempelmann E, Skórska-Stania A (2012). "From methylene blue to chloroquine: a brief review of the development of an antimalarial therapy". Parasitol Res. 111 (1): 1–6. doi:10.1007/s00436-012-2886-x. PMID 22411634. S2CID 54526057.
  2. ^ Dünschede HB (1971). "Tropenmedizinische Forschung bei Bayer". Schadewaldt H (Edit.): Düsseldorfer Arbeiten zur Geschichte der Medizin.


Gravestone of Hans Andersag, his wife Else and youngest daughter Renate
Protocol for the synthesis of Resochin, Hans Andersag 1934