Cefprozil EP Impurity B Potassium 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 Potassium salt (as per EP)

Synonym: Des-dimethylpyrrolidine Eletriptan; 5-[2-(Phenylsulfonyl)ethyl]-1H-indole;