7.beta.-(2'-(1",3",5"-Triazepin-4"-one)-2'-(oxime ether)-acetami
7.beta.-(2-Aryl-2-hydroxyiminoacetamido)ceph-3-em-4-carboxylic a
7.beta.-Acyloxy-3-acetoxymethyl cephalosporins
7.beta.-Acyloxy-3-heterocyclicthiomethyl cephalosporins
7.beta.-Acyloxy-3-heterocyclicthiomethyl cephalosporins
7.beta.-Hydroxy-3-heterocyclicthio-methyl cephalosporin intermed
7.beta.-Phosphoramido-7.alpha.-methoxycephalosporanic acid deriv
7.beta.-[(2-Amino-1,2-dioxoethyl)amino]acyl cephalosporins
7.beta.-[2-Aryl-2-(etherified oximino)acetamido]-3-N-substituted
7.beta.-[2-Etherified oximino-2-(phenyl- or naphthylacetamido)]
7.beta.-[2-Etherified oximino-2-(thienyl-, furyl- or pyridylacet
7.beta.-[[[(2-Cyanomethyl)amino]-1,2-dioxoethyl]amino]acyl cepha
7.beta.-[[[2-Acylamino]-1,2-dioxoethyl]amino]acyl cephalosporins
7H-1,3,4-Thiadiazolo-[3,2-a]-pyrimidin-7-one-5-carboxylic compou
7[-2-Alkoxyamino(acetamido)]cephalosporin derivatives
7[2-(2-Aminothiazol-4-yl)-2-alkoxyimino]acetamido 3[4-alkyl-5-ox
7[[(1-Pyrrollyl)7 acetyl]amino]cephalosporin derivatives