英文别名Cefmetazole Impurity 11; 2-(Cyanomethylthio)acetic Acid; 2-(cyanomethylsulfanyl)acetic acid; [(CYANOMETHYL)THIO]ACETIC ACID; (cyanomethylthio)acetic acid, potassium salt; Cefmetazole impurity 3/2-((cyanomethyl)thio)acetic acid; Cefmetazole sodium Impurity 11; 3-CYANOMETHYLTHIOACETIC ACID; Cefmetazole side chain; Acetic acid, 2-[(cyanomethyl)thio]- 
