On October 15, 1951, Luis Ernesto Miramontes, a 26-year-old chemist, achieved the first synthesis of norethisterone at the Syntex laboratories in Mexico City. According to the Gaceta UNAM, norethisterone made possible the first contraceptive pill. The patent for the synthesis is credited to Miramontes, George Rosenkranz and Carl Djerassi.
According to the Gaceta UNAM, the profits belonged to the company.