(2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-[(3-methylsulfonyl-2-oxoimidazolidine-1-carbonyl)amino]-2-phenylacetyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-[(3-methylsulfonyl-2-oxo-imidazolidine-1-carbonyl)amino]-2-phenyl-acetyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-[[(3-methylsulfonyl-2-oxo-1-imidazolidinyl)-oxomethyl]amino]-1-oxo-2-phenylethyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-7-keto-6-[[(2R)-2-[(2-keto-3-mesyl-imidazolidine-1-carbonyl)amino]-2-phenyl-acetyl]amino]-3,3-dimethyl-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (2S,5R,6R)-3,3-dimethyl-6-[[(2R)-2-[(3-methylsulfonyl-2-oxo-imidazolidin-1-yl)carbonylamino]-2-phenyl-ethanoyl]amino]-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 51481-65-3 Mezlocillin (2S,5R,6R)-3,3-dimethyl-6-{[(2R)-2-({[3-(methylsulfonyl)-2-oxoimidazolidin-1-yl]carbonyl}amino)-2-phenylacetyl]amino}-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid D05021 Mezlocillin (USAN) C07221