Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1164/34A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by F Hoffmann La Roche AGfiledCriticalF Hoffmann La Roche AG
Publication of GB420632ApublicationCriticalpatent/GB420632A/en
Female sexual hormones are obtained from the urine of stallions by heating the slightly acidified urine, cooling and extracting with an organic solvent e.g. ether, washing the extract with sodium carbonate solution and then with water, evaporating the solvent and purifying the extract in the usual manner. Reference has been directed by the Comptroller to Specification 392,039.
GB1164/34A1933-02-241934-01-12Process for the manufacture of female sexual hormone
ExpiredGB420632A
(en)