Synonyms: 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylicacid, 7-[[(2R)-amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-, monosodiumsalt, (6R,7R)- (9CI); 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-[[amino(4-hydroxyphenyl)acetyl]amino]-3-methyl-8-oxo-, monosodium salt,[6R-[6a,7b(R*)]]-; Sodium cefadroxil; p-Hydroxycephalexin