3-苯基-2(1H)-吡嗪酮; 2-羟基-3-苯基吡嗪; 头孢克洛杂质F; 头孢克洛EP杂质F;

2(1H)-Pyrazinone, 3-phenyl-; 2-hydroxy-3-phenylpyrazine; 3-Phenyl-1H-pyrazin-2-one; 3-Phenyl-2(1H)-pyrazinone; 3-Phenylpyrazin-2(1H)-one; Cefaclor EP Impurity F;