BAY-k-4999

Fuzlocillin

furazlocillin

6α-[[(R)-[[[3-[[(E)-(2-Furanyl)methylene]amino]-2-oxoimidazolidin-1-yl]carbonyl]amino](4-hydroxyphenyl)acetyl]amino]penicillanic acid

(2S,5R,6R)-6-[(R)-[[[3-[[(E)-(2-Furanyl)methylene]amino]-2-oxo-1-imidazolidinyl]carbonyl]amino](4-hydroxyphenyl)acetylamino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid