oestriol

In 1932, Butenandt was able, from observations made in spectral analysis, and especially on the basis of the then established correct formula of cholesterol to draw up the formulae of the chemical structure of oestrone and oestriol.

Nobel Prize in Chemistry 1939 - Presentation Speech 1966

By breaking down the oestriol molecule stage by stage Butenandt proved that both œstrogenic hormones contained a phenanthrene core.

Nobel Prize in Chemistry 1939 - Presentation Speech 1966

Shortly after the discovery of oestrone, Marrian in London (1930) isolated from the urine of pregnant women a new hormone which he called oestriol.

Nobel Prize in Chemistry 1939 - Presentation Speech 1966