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Priority claimed from US217383Aexternal-prioritypatent/US3873714A/en
Priority claimed from US00259853Aexternal-prioritypatent/US3818042A/en
Priority claimed from AT598972Aexternal-prioritypatent/AT327893B/en
Application filed by Syntex IncfiledCriticalSyntex Inc
Publication of ATA765774ApublicationCriticalpatent/ATA765774A/en
Application grantedgrantedCritical
Publication of AT329053BpublicationCriticalpatent/AT329053B/en
PROCESS FOR THE PREPARATION OF NEW UNSATURATED, ETHER-SUBSTITUTED XANTHONE CARBONIC ACID DERIVATIVES AND THEIR PHARMACEUTICAL-PERMITTED ESTERS, AMIDES AND SALT