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Pfizer Inc
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Pfizer Inc
Charles Pfizer and Co Inc
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Application filed by Pfizer Inc, Charles Pfizer and Co IncfiledCriticalPfizer Inc
Priority to FR815571ApriorityCriticalpatent/FR1282542A/fr
Priority to FR836429Aprioritypatent/FR229M/fr
Application grantedgrantedCritical
Publication of FR1282542ApublicationCriticalpatent/FR1282542A/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
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Organic Chemistry
(AREA)
FR815571A1959-09-281960-01-13Perfectionnements apportés aux procédés pour la préparation d'alcoyl-pénicillines alpha-substituées et de leurs sels
ExpiredFR1282542A
(fr)
Perfectionnements apportés aux procédés pour la préparation de pénicillines et de leurs sels par acylation de bouillons de fermentation contenant de l'acide 6-aminopénicillanique