7-Acylamino-3-(5-sulfomethyl-1,3,4-thiadiazol-2-y lthiomethyl)-3

7-Acylamino-3-(substituted tetrazolyl thiomethyl) cephalosporins

7-Acylamino-3-(sulfaminoalkyl substituted tetrazolylthiomethyl)c

7-Acylamino-3-(sulfaminoalkyl substituted tetrazolylthiomethyl)c

7-Acylamino-3-acyl-2(or 3)cephems

7-Acylamino-3-cephem-4-carboxylic acid derivatives and pharmaceu

7-acylamino-3-heteroarylthio-3-cephem carboxylic acid...

7-acylamino-3-substituted cephalosporanic acid derivatives

7-acylamino-3-substituted cephalosporanic acid derivatives

7-acylamino-3-substituted cephalosporanic acid derivatives

7-Acylamino-3-substituted cephalosporanic acid derivatives and p

7-Acylamino-3-substituted cephalosporanic acid derivatives and p

7-acylamino-3-vinylcephalosporanic acid derivatives

7-acylamino-3-vinylcephalosporanic acid derivatives

7-Acylamino-3-vinylcephalosporanic acid derivatives and processe

7-Acylamino-3-vinylcephalosporanic acid derivatives and processe

7-acylamino-3-vinylcephalosporanic acid derivatives and processe

7-acylamino-3-vinylcephalosporanic acid derivatives useful for t

7-Acylamino-3-[1-(2,3-dihydroxypropyl)tetrazole-5-ylthiomethyl]-

7-Acylamino-3-[1-(2-sulfamidoethyl)tetrazol-5-ylthiomethyl]-3- c