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Archive | 1965

alpha-aminomethylpenicillin derivatives

David A Johnson; Charles A Panetta


Archive | 1979

Production of penicillins

Derek Walker; Herbert H Silvestri; Chester Sapino; David A Johnson


Archive | 1974

Process for the preparation of 7-aminocephalosporanic acids

David A Johnson; Steven P. Brundidge; Albert Louis Vulcano; Chester Sapino; James David Mahan; Joseph H. Grossman


Archive | 1963

D-(-)-alpha-aminobenzylpenicillin trihydrate

Jr Glenn A Hardcastle; David A Johnson


Archive | 1962

Aryl sulfonic acid salts of alpha-aminobenzylpenicillins

David A Johnson; Herbert H Silvestri


Archive | 1968

PROCESS FOR THE PREPARATION OF 7 - (ALPHA-(4 - PYRIDYLTHIO)ACETAMIDO)CEPHALOSPORANIC ACID

David A Johnson; Herbert H Silvestri


Antibiotiki | 1963

Preparation of 6-aminopenicillanic acid

David A Johnson; Jr Glenn A Hardcastle


Archive | 1976

Methoxymethyl D-6-(2,2-dimethyl-5-oxo-4-phenyl-1-imidazolidinyl)penicillanate

Paul D. Sleezer; David A Johnson


Archive | 1963

Process for concentrating aqueous solutions of camphorsulfonic acid

David A Johnson; Glenn A. Hardcastle Jr.


Archive | 1962

Process for the production of alpha-aminobenzylpenicillins

David A Johnson; Wolfe Saul

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