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Pfizer Inc
Original Assignee
Pfizer Inc
Charles Pfizer and Co Inc
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Filing date
Publication date
Application filed by Pfizer Inc, Charles Pfizer and Co IncfiledCriticalPfizer Inc
Application grantedgrantedCritical
Publication of FR1007291ApublicationCriticalpatent/FR1007291A/fr
C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
FR1007291D1947-06-301948-05-31Perfectionnements apportés aux procédés de préparation de composés de penicilline
ExpiredFR1007291A
(fr)