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Priority claimed from US06/246,504external-prioritypatent/US4321196A/en
Application filed by Pfizer Inc.filedCriticalPfizer Inc.
Priority claimed from EP82301317Aexternal-prioritypatent/EP0061281B1/en
Application grantedgrantedCritical
Publication of ATE10194T1publicationCriticalpatent/ATE10194T1/en
PROCEDURE FOR THE PREPARATION OF HALOGENMETHYL-ALKYL SULPHONYLOXYMETHYL OR PHENYLSULPHONYLOXYMETHYLESTERS OF PENICILLANIC ACID 1,1-DIOXIDE AND INTERMEDIATES