Sex hormones

Leopold Stenhphan Ruzicka synthesized androsterone confirming Butenandt's analysis. Later, Butenandt also isolated progesterone, a female sex hormone crucial to the mechanisms involved in pregnancy.
 Adolf Butenandt and Leopold Stenhphan Ruzicka Germany, Switzerland 1934 Sex hormones

Leopold Stenhphan Ruzicka synthesized androsterone confirming Butenandt's analysis. Later, Butenandt also isolated progesterone, a female sex hormone crucial to the mechanisms involved in pregnancy.