英文同义词:
Dehydro Levetiracetam;(Z)-2-(2-oxopyrrolidin-1-yl)but-2- enamide;Levetiracetam EP Impurity B;LevetiracetaM IMpurity B;(2Z)-2-(2-Oxopyrrolidin-1-yl)but-2-enamide;Levetiracetam EP Impurity B/Dehydro Levetiracetam;Levetiracetam Impurity 2(Levetiracetam EP Impurity B);Levetiracetam impurity 4/Levetiracetam EP Impurity B/(Z)-2-(2-oxopyrrolidin-1-yl)but-2- enamide