英文别名ZOPII; Intermediate for Zopiclone II; 6-(5-Chloropyrid-2-yl)-5-hydroxy-7-oxo-5,6-dihydro-pyrrolo-(3,4b) Pyrazime; Intermediate II for Zopiclone; 6-(5-CHLORO-PYRIDIN-2-YL)-7-HYDROXY-6,7-DIHYDRO-PYRROLO3,4-BPYRAZIN-5-ONE; 6-(5-chloro-2-pyridinyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazine-5-one; 6-(5-chloropyridin-2-yl)-5-hydroxy-7-oxo-5,6-dihydropyrrolo-[3,4-b]-pyrazine; 6-(5-CHLOROPYRIDIN-2-YL)-5-HYDROXY-7-OXO-5,6-DIHYDROPROLO(3,4B)PYRAZINE; Zopiclone intermediate; Zopiclone Impurity 2 (Zopiclone EP Impurity B); Zopiclone interMediate II; Eszoplicone Impurity B 
