"In the early 1950s, Frank Colton and Carl Djerassi, two chemists working independently at separate pharmaceutical companies, took Marker's work one step farther. The scientists each created a highly potent oral form of synthetic progesterone. Working for Syntex, a pharmaceutical company based in Mexico, Djerassi invented norethindrone. This synthetic progesterone was not only orally effective, it was also eight times more potent than natural progesterone. At Searle, Colton created another version of orally effective synthetic progesterone called norethynodrel. With the advent of these new drugs, the Pill came into existence. Although neither Djerassi or Colton developed the drug for contraceptive purposes, both Searle and Syntex had an oral contraceptive right under their noses. Although Djerassi synthesized his version of the drug first, Searle beat Syntex to market. Less than a decade after Colton and Djerassi's breakthrough, with Gregory Pincus making the connection to contraception, Searle's Pill would reach American consumers."
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“The Development of Synthetic Hormones“, PBS.
https://en.wikiquote.org/wiki/Hormonal_birth_control
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Hormonal birth control
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