7-Carboxy or 2,2,2-trichloroethoxy carbonyl- cephalosporins

7-Chloro-8(substituted amino carbonyloxy)-1-phenyl-2,3,4,5-tetra

7-Dihaloalkanamido-3-heterocyclic-thiomethyl-3-cephem-4-carboxyl

7-Dimethylamino-4-chromanone

7-Hydrocarbonoxy imino-acetamido-3-carbamoyloxy methylceph-3-em-

7-Hydroxy-benzo[ij]quinolizine-2-carboxylic acids and derivative

7-Hydroxy-benzo[ij]quinolizine-2-carboxylic acids, intermediates

7-Isocyanato-1,4-benzodiazepin-2-ones

7-Mercapto(or thio)-benzothiadiazine products

7-Mercapto(or thio)-benzothiadiazine products

7-Methoxy 7-.alpha.-ureidothienylacetamidocephalosporins

7-Methoxy 7-alpha-ureidothienylacetamidocephalosporins

7-Methoxy cyclonexadienylureidocephalosporins

7-Methoxy phenylureidocephalosporins

7-Methoxy phenylureidocephalosporins

7-Methoxy pyridylureidocephalosporins

7-Methoxycephalosporin derivatives

7-Methoxycephalosporins

7-Methyl-1-isopropyl-4-phenyl-5,6,7,8-tetrahydro-2(1H)-quinazoli

7-Methyl-2-benzofuran carboxaldehyde