Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-[2-[3-(2-furoyl)ureido]-2-phenylacetamido]-3,3-dimethyl-7-oxo-,monopotassium salt (8CI); 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[(2R)-[[[(2-furanylcarbonyl)amino]carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-,monopotassium salt, (2S,5R,6R)- (9CI);4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[[[[[(2-furanylcarbonyl)amino]carbonyl]amino]phenylacetyl]amino]-3,3-dimethyl-7-oxo-,monopotassium salt, [2S-[2a,5a,6b(S*)]]-; BL-P 1597; Furbenicillin