( 6r , 7r ) -7- [ [ carboxy ( 4-hydroxyphenyl ) -acetyl ] amino ] -7-methoxy-3 [ [ ( 1-methyl-1h-tetrazo l-5-yl ) thio ] methyl ] -8-oxo-5-oxa-1-azabicyclo [ 4,2,0 ] oct-2-ene-2-carboxylic acid ( moxalactam , ly 127 935 ) , a novel 1-oxa-beta-lactam , was proved to display similar antibacterial activity as cefotaxime against a number of beta-lactamase-producing gram-negative strains .
C0279516
antibacterial
C0007554
cefotaxime