Doripenem Impurity I

(4R,5S,6S)-4-nitrobenzyl 3-((diphenoxyphosphoryl)oxy)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate

(4R,5S,6S)-3-(((3S,5S)-5-(aminomethyl)pyrrolidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid

(4R,5S,6S)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-3-(((3S,5S)-5-((sulfamoylamino)methyl)pyrrolidin-3-yl)thio)-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid-D4

(4R,5S,6S)-3-(((3S,5S)-1-((2S,3R)-2-((2S,3R)-5-carboxy-3-hydroxy-4-(((3S,5S)-5-((sulfamoylamino)methyl)pyrrolidin-3-yl)thio)-3,4-dihydro-2H-pyrrol-2-yl)-3-hydroxybutanoyl)-5-((sulfamoylamino)methyl)pyrrolidin-3-yl)thio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid

(2S,4R)-4-nitrophenethyl 4-(acetylthio)-2-(((tert-butoxycarbonyl)(sulfamoyl)amino)methyl)pyrrolidine-1-carboxylate

(2S,2'S,3R,3'R)-2,2'-((2R,3S,7R,8S)-2,7-dimethyl-5,10-dioxo-1,6-bis(((3S,5S)-5-((sulfamoylamino)methyl)pyrrolidin-3-yl)thio)-2,3,5,7,8,10-hexahydrodipyrrolo[1,2-a:1',2'-d]pyrazine-3,8-diyl)bis(3-hydroxybutanoic acid)

(4S,5R,6S)-4-nitrobenzyl 3-((diphenoxyphosphoryl)oxy)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate