What is George Rosenkranz?
{{Infobox scientist |name = George Rosenkranz |image = George Rosenkranz crop 2013 13-2744-1 1247.jpg |image_size = |caption = George Rosenkranz receiving the [[Biotechnology Heritage Award]] in [[Chicago]], 2013 |birth_date = {{birth date|1916|8|20|df=yes}} |birth_place = [[Budapest]], [[Hungary]] |death_date = {{death date and age|2019|6|23|1916|8|20|df=yes}} |death_place = [[Atherton, California]], [[United States]] |residence = |citizenship = |nationality = Mexican<ref name=Excelsior>{{cite web|title=La píldora anticonceptiva, ¿es de 'padres' mexicanos?|url=http://www.excelsior.com.mx/nacional/2014/03/09/947758|work=[[Excélsior]]|date=9 March 2014|access-date=30 May 2015|quote=Rosenkranz se nacionalizó mexicano, siguió trabajando en Syntex por muchos años, actualmente vive en México y tiene 98 años.}}</ref> |field = [[Chemistry|Chemist]] |alma_mater = |known_for = Synthesis of [[norethisterone]], the first orally highly active [[progestin]], used in one of the first [[combined oral contraceptive pill|oral contraceptive pill]]s}} '''George Rosenkranz''' (born ''György Rosenkranz''; 20 August 1916 &ndash; 23 June 2019)<ref name=CHFOralHistory>{{cite web|title=George Rosenkranz (Oral History)|url=http://www.chemheritage.org/discover/collections/oral-histories/details/rosenkranz-george.aspx|publisher=[[Chemical Heritage Foundation]]|access-date=6 February 2014|archive-date=14 August 2013|archive-url=https://web.archive.org/web/20130814021708/http://www.chemheritage.org/discover/collections/oral-histories/details/rosenkranz-george.aspx|url-status=dead}}</ref> was a [[Hungarians|Hungarian]]-born [[Mexican]] scientist in the field of [[Steroid|steroid chemistry]]. He used native Mexican plant sources as raw materials.<ref name=Ness>{{cite book|last=Ness|first=Roberta B.|title=Genius unmasked|url=https://archive.org/details/geniusunmasked0000ness|year=2013|publisher=Oxford Univ. Press|location=Oxford|isbn=9780199976