| 英文同义词: | PYRAZINE-2,3-DICARBOXYLIC ANHYDRIDE;Zopiclone Impurity 5;2,3-Py Razinedica boxylic Anbyd Yide;2,3-PYRAZINECARBOXYLIC ANHYDRIDE;2,3-PYRAZINEDICARBOXLIC ANHYDRIDE;2,3-PYRAZINEDICARBOXYLICANHYDRATE;2,3-Pyrazinedicarboxylic acid anhydride;Furo[3,4-b]pyrazine-5,7-dione (9CI) |