Cefprozil EP Impurity B Sodium salt

Chemical Name: (6R,7R)-7-[[(2R)-2-amino-2-(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid Sodium salt (as per EP)

Synonym: (R)-5-Bromo-3-(N-methylpyrrolidin-2-ylmethyl)-1H-indole; 5-Bromo-3-[[(2R)-1-methyl-2-pyrrolidinyl]methyl]-1H-indole;