Meropenem EP Impurity B

Chemical Name: (4R,5S,6S)-3-[[(3S,5S)-1-[(2S,3R)-2-[(2S,3R)-5-carboxy-4-[[(3S,5S)-5-[(dimethylamino)carbonyl]pyrrolidin-3-yl]sulfanyl]-3-methyl-2,3-dihydro-1H-pyrrol-2-yl]-3-hydroxybutanoyl]-5-[(dimethylamino)carbonyl]pyrrolidin-3-yl]sulfanyl]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid

Synonym: methyl methylglycinate hydrochloride