the beta-lactamase stability and inhibitory activity of 1-oxa cephalosporin , ( 6r,7r ) -7- [ [ carboxy ( 4-hydroxyphenyl ) acetyl ] amino ] -7-methoxy-3- [ [ ( 1-methyl-1h-tet razol-5-yl ) thio ] methyl ] -8-oxo-5-oxa-1-azabicyclo [ 4.2.0 ] oct-2-ene-2-carboxylic acid , was investigated and compared to that of cefoxitin and cefotaxime .
C3536856
cephalosporin
C0007557
cefoxitin