英文别名Cefalexin EP Impurity D; Cephalexin Impurity D (Cefradine EP Impurity F); Cefadroxil EP Impurity G; 4-hydroxy-3-methyl-2H-thiophen-5-one; 3-Hydroxy-4-methylthiophen-2(5H)-one; Cefradine EP Impurity F (Cefalexin EP Impurity D); cefalexin Impurity G 
