(5R,6S)-6-(1-hydroxyethyl)-7-oxo-3-[(2R)-oxolan-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid (5R,6S)-6-(1-hydroxyethyl)-7-oxo-3-[(2R)-tetrahydrofuran-2-yl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid (5R,6S)-6-(1-hydroxyethyl)-7-oxo-3-[(2R)-2-tetrahydrofuranyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid (5R,6S)-6-(1-hydroxyethyl)-7-keto-3-(tetrahydrofuryl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 106560-14-9 Fropenem Fropenem [INN] (+)-(5R,6S)-6-((1R)-1-Hydroxyethyl)-7-oxo-3-((2R)-tetrahydro-2-furyl)-4-thia-1-azabicyclo(3.2.0)hept-2-ene-2-carboxylic acid