Biapenem :
    Chemical Name : 6-[(4R,5S,6S)-2-carboxy-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-l-azabicyco-[ 3 . 2 . 0 ]hept-2-ene-3-yl]thio-6,7-dihydro-5H-pyrazolo-[1,2-a][1,2,4]t-riazol-4-ium hydroxideinner salt
    CAS No. : 120410-24-4
    Molecular formula : C₁₅H₁₈N₄O₄S
    Molecular weight : 350.40
    Standard : company standard
    Structure formula: