(2R,4R,5Z)-2-(carboxymethyl)-5-(2-hydroxyethylidene)-3-[(2R,3Z,5R)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carbonyl]-1,3-oxazolidine-4-carboxylic acid; (2R,4R,5Z)-2-(Carboxymethyl)-5-(2-hydroxyethylidene)-3-[[(2R,3Z,5R)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]oxazolidine-4-carboxylic acid; Potassium Clavulanate - Impurity E (EP/BP); 2-Oxazolidineacetic acid, 4-carboxy-5-(2-hydroxyethylidene)-3-[[(2R,3Z,5R)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]-, (2R,4R,5Z)-; (2R,4R,5Z)-4-Carboxy-5-(2-hydroxyethylidene)-3-[[(2R,3Z,5R)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-yl]carbonyl]-2-oxazolidineacetic Acid; (2R,4R,Z)-2-(Carboxymethyl)-5-(2-hydroxyethylidene)-3-((2R,5R,Z)-3-(2-hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carbonyl)oxazolidine-4-carboxylic Acid; Clavulanic Acid Dimer Impurity
