(6R,7R)-7-((R)-2-Amino-2-(3-chloro-4-hydroxyphenyl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid. 57847-69-5 Cefedrolor Cefedrolor [INN]