7.alpha.-methylnorethindrone enanthate and its use in long term
7.alpha.-Substituted 3-oxo-17.alpha.-pregn-4-ene-21,17-carbolact
7.alpha.Methoxycephalosporin derivatives
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.-(D-5-amino-5-carboxyvaleramido )-7-methoxy-3-substituted
7.beta.-(substituted)amino-3-substituted cephalosporanic acids a
7.beta.-Acylamino-3-(alkanesulfonamidoalkyl substituted tetrazol
7.beta.-Acylamino-3-(phosphonoalkyl and esterified phosphonoalky
7.beta.-Acyloxy cephalosporins
7.beta.-Acyloxy-3-acetoxymethyl cephalosporins
7.beta.-Acyloxy-3-heterocyclicthiomethyl cephalosporins
7.beta.-Acyloxy-3-heterocyclicthiomethyl cephalosporins
7.beta.-Amino-3-thio-3-cephem-4-carboxylic acid compounds, and a
7.beta.-Amino-cepham-3-ol-4-carboxylic acid compounds
7.beta.-Arylalkyl-3-methoxy or 3-hydroxy-4,5.alpha.-epoxy-6.beta
7.beta.-Arylalkyl-6.alpha., 7 .alpha.-oxymethylene-3-methoxy or
7.beta.-Arylalkyl-7.alpha.-methyl-6-oxo or 6.alpha.-hydroxy-3-me
7.beta.-Hydroxy-3-heterocyclicthio-methyl cephalosporin intermed
7.beta.-Isocyano cephalosporin esters and process of preparation