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3-azinomethyl rifamycins
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Cefadroxil acetylcysteinate salt
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Cephalosporine desacetoxy esters and salts thereof
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N-Carboxy cefadroxil sodium salt
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Cephapirin esters and salts thereof and their production
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Penicillin cpds. e.g. ampicillin prodn. - via 1,3,2-di:oxa-boran-2-yl protected intermediates
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Preparation process of cephalosporins
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Method of preparing derivatives of 7-amino- -desacetoxycephalosporanic acid
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