Synonyms: 4-Oxa-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3-(2-hydroxyethylidene)-7-oxo-, monopotassium salt, (2R,3Z,5R)- (9CI);4-Oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,3-(2-hydroxyethylidene)-7-oxo-, monopotassium salt, [2R-(2a,3Z,5a)]-;Clavitesse;Clavulanate potassium;Clavulanic acid potassium salt;4-Oxa-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 3-(2-hydroxyethylidene)-7-oxo-, potassium salt (1:1), (2R,3Z,5R)-;