Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfizer Inc
Original Assignee
Pfizer Inc
Charles Pfizer and Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pfizer Inc, Charles Pfizer and Co IncfiledCriticalPfizer Inc
Priority to ES348354ApriorityCriticalpatent/ES348354A3/es
Publication of ES348354A3publicationCriticalpatent/ES348354A3/es
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Nitrogen Condensed Heterocyclic Rings
(AREA)
ES348354A1967-12-161967-12-16Un procedimiento para la preparacion de bases de schiff de-rivadas de 1,4 dioxidos de 2-formilquinoxalina.
ExpiredES348354A3
(es)
Un procedimiento para la preparacion de compuestos semisin-teticos intermedios en la produccion de cefalosporinas, pe- nicilinas y antibioticos relacionados de beta-lactama.