[4R-[3(3S*,5S*),4α,5β,6β(R*)]]-3-[[5-[[(3-Carboxyphenyl)amino]carbonyl]-3-pyrrolidinyl]thio]-6-(1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid disodium salt ; CAS # 153832-38-3 ;

(4R,5S)-3-((3S,5S)-5-((3-Carboxyphenyl)carbamoyl)pyrrolidin-3-ylthio)-5-((1S,2R)-1-carboxy-2-hydroxypropyl)-4-methyl-4,5-dihydro-1H-pyrrole-2-carboxylic acid ;

3-[(2S,4S)-4-Mercaptopyrrolidine-2-carboxamido]benzoic acid HCl ; CAS # 791582-43-9 (acid) ; 219909-83-8 (HCl salt) ;

Ertapenem Monosodium ; CAS # 153773-82-1 ;