英文别名Cefaclor Impurity E; (2R)-2-[[(2R)-2-amino-2-phenylacetyl]amino]-2-[(2R)-5-chloro-4-oxo-2,3-dihydro-1,3-thiazin-2-yl]acetic acid; 2-[[(2R)-2-amino-2-phenylacetyl]amino]-2-(5-chloro-4-oxo-3,4-dihydro-2H-1,3-thiazin-2-yl)acetic acid; Cefaclor Impurity 94; CEFACLOR IMPURITY E [EP IMPURITY]; 2H-1,3-Thiazine-2-acetic acid, alpha-[(aminophenylacetyl)amino]-5-chloro-3,4-dihydro-4-oxo-, [2R-[2R*[R*(R*)]]]-; Cefaclor EP Impurity E; Cefaclor Impurity 5; 2R-[2R*[R*(R*)]]]-α-[(aminophenylacetyl)amino]-5-chloro-3,4-dihydro-4-oxo-2H-1,3-Thiazine-2-acetic Acid; Cefaclor Open-Ring Impurity 
