| 英文同义词: | PYRAZINE-2,3-DICARBOXYLIC ANHYDRIDE;Zopiclone Impurity 5;2,3-Py Razinedica boxylic Anbyd Yide;2,3-PYRAZINEDICARBOXYLIC ANHYDRIDE;2,3-PYRAZINECARBOXYLIC ANHYDRIDE;2,3-PYRAZINEDICARBOXLIC ANHYDRIDE;2,3-PYRAZINEDICARBOXYLICANHYDRATE;FURO[3,4-B]PYRAZINE-5,7-DIONE |