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.)
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Pfizer Italia SRL
Original Assignee
Farmaceutici Italia SpA
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Filing date
Publication date
Application filed by Farmaceutici Italia SpAfiledCriticalFarmaceutici Italia SpA
Publication of ES231620A2publicationCriticalpatent/ES231620A2/es
Mejoras en el objeto de la patente principal nº 230.081 por "procedimiento para la preparación de análogos de hormonas esteroides sustituídos en la posición 4", caracterizadas porque comprenden el hacer reaccionar un 21-hidroxiesteroide disuelto en piridina anhidra, con 1-2 mols de cloruro de trifenilmetilo en baño maría de 1 a 8 horas o a temperatura ambiente de 2 a 20 días.
ES0231620A1956-05-041956-10-29PROCEDIMIENTO PARA LA PREPARACIoN DE ANáLOGOS DE HORMONAS ESTEROIDES SUSTITUiDOS EN LA POSICIoN 4
ExpiredES231620A2
(es)