3-Hydroxy-2-(7-oxo-3-phenyl-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-en-6-yl)but-3-enoic Acid Benzhydryl Ester is an intermediate in the synthesis of oxacephem derived beta-lactam antibiotic that is particularly effective against gram-positive bacteria.Solubility:Chloroform, Ethyl Acetate, Methanol