英文别名Zopiclone Impurity 7; 6-(5-Chloro-2-pyridyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione; Intermediate for Zopiclone I; 6-(5-Chloro-2-pyridinyl)-5H-pyrrolo[3,4-b]pyrazine-5,7(6H)-dione; 6-(5-chloropyridin-2-yl)pyrrolo[3,4-b]pyrazine-5,7-dione; 6-(5-Chlor-2-pyridyl)-5,7-dioxo-5,6-dihydro<3,4-b>pyrrolopyrazin; 6-(5-chloro-2-pyridyl)-5h-pyrrolo(3,4-b)Pyrazine-5,7(6h)-dione; 6-(5-chloro-pyridin-2-yl)-pyrrolo[3,4-b]pyrazine-5,7-dione; 6-(5-chloropyridin-2-yl)-5,7-dioxo-5,6-dihydropyrrolo[3,4-b]-pyrazine 
