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Application filed by PfizerfiledCriticalPfizer
Publication of ATA602975ApublicationCriticalpatent/ATA602975A/de
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Publication of AT342765BpublicationCriticalpatent/AT342765B/de
C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
C07D493/10—Spiro-condensed systems
AT602975A1974-08-091975-08-04Verfahren zur herstellung eines neuen antibiotikums
AT342765B
(de)