7-(N-substituted-2-phenylglycinamido)-3-sub stituted-3-cephem-4-

7-(N-Substituted-2-phenylglycinamido)-3-subs tituted-3-cephem-4-

7-(S)-Acylaminocephalosporin sulfones and process

7-(substituted)-8-(substituted)-9-(substitued amino)-6-demethyl-

7-(substituted)-8-(substituted)-9-](substituted glycyl)amido]-6-

7-(substituted-9-(substituted amino)-6-demethyl-6-deoxytetracycl

7-(Syn-.alpha.-alkoxy-iminofuryl)acetamido-3-(2-methyl-2,3-dihyd

7-(Syn-.alpha.-alkoxy-iminofurylacetamido-3-(2-carboxyalkyl-2,3-

7-.alpha. substituted imino 7-.beta. substituted thio cephalospo

7-.alpha.-Amino-substituted acylamino-3-(1-carboxymethyltetrazol

7-.alpha.-Methoxy cephalosporins

7-2-Indolyl acetamido cephalosporin derivatives

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

7-Acyl-3-(sulfonic acid and sulfamoyl substituted tetrazolyl thi

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

7-Alpha-(2-aminothiazole)-acetamido-cephalosporins

7-Amino intermediates for preparing 7-acyl-3-(ureidoalkyl substi

7-Amino-3- (2-carboxyalkyl-2,3-dihydro-s-triazolo[4,3-b]pyridazi

7-Amino-3-(1-carboxymethyltetrazol-5-ylthiomethyl)-3-cephem-4-ca

7-Amino-3-(phosphonoalkyl and esterified phosphonoalkyl substitu