[Excretion of ethinyloestradiol sulfonate in the human milk (author's transl)].

The problem of ethinylestradiol sulphonate excretion in human milk was qualitatively and quantitatively studied. In two women 0.0012 or 0.03000 per cent of total radioactivity were detected within the first nine days from application. Parallel thin-layer chromatography revealed the occurrence of ethinyloestradiol sulphonate in both its depot form and as ethinylestradiol.