5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-((hydroxyphenylacetyl)amino)-3-methyl-8-oxo-, monopotassium salt, (6R-(6alpha,7beta(R*)))- 59684-59-2 7-(alpha-Hydroxy-alpha-phenylacetamido)-3-methyl-3-cephem-4-carboxylic acid A 1226 A1-226