6 Alpha, 6 beta-difluoro-etianic acid derivatives

6 Substituted amino-2-substituted-pen-2-em-3-carboxylic acid

6,7-Dimethoxy-2-(4-thiomorpholinyl)-4-quinazolinamine and relate

6,7-Methylenedioxy-1-(2,2,2-trifluoroethyl)-4(1H)-quinolone-3-ca

6- and 6,6-Disubstituted-2-substituted-oxapen-2-em-3-carboxylic

6-(1'-Hydroxyethyl)-2-substituted-pen-2-em-3-carboxylic acid

6-(1,8-Naphthyridin-2-yl)-5-piperazino carbonyloxy-7-oxo-6,7-dih

6-(1-Hydroxyethyl)-3-substituted-1-azabicyclo(3.2.0)-hept-2-en-7

6-(1-Piperazinyl)morphanthridine as a sleep inducing or prolongi

6-(1-Piperazinyl)quinoxaline

6-(2-Acylamino-2-arylacetamido)penicillanic acids

6-(Nitrogen-containing heterocyclic)hydroxymethylpenicillanic ac

6-(p-Acylaminophenyl)-4,5-dihydropyridaz-3-ones and therapeutic

6-(P-PIPERAZINO)-PHENYL-4,5-DIHYDRO-3(2H)pyridazinones

6-(Polyhaloisopropyl)quinazoline-2,4-diones

6-(Pyridinyl)-3(2H)-pyridazinones and their use as cardiotonics

6-(Substituted phenoxy)tetrazolo(1,5-b)pyridazines and a method

6-(Substituted phenyl)-4,5-dihydro-pyridazin-3(2H)-ones

6-, 1- And 2-substituted-1-carbadethiapen-2-em-3-carboxylic acid

6-Acylamino-penam-3-carboxylic and 7-acylamino-3-cephem-4-carbox