Zopiclone Impurity 1 Sodium Salt

Zopiclone iMpurity B 6-(5-CHLORO-PYRIDIN-2-YL)-7-PHENOXYCARBONYLOXY-6,7-DIHYDRO-PYRROLO3,4-BPYRAZIN-5-ONE 1-Piperazinecarbonyl chloride (9CI) 4-Methylpiperazine-1-carbonyl chloride Piperazine, 1-methyl-, 1-oxide, hydrochloride (1:2) 1-Piperazinecarboxylic acid, 4-methyl-, 1-methylethyl ester 2-Acetamido-5-chloropyridine 1-Piperazinecarboxylicacid,4-methyl-,ethylester(6CI,9CI) 6-(5-Chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-yl piperazine-1-carboxylate hydrochloride 6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one Zopiclone Impurity Deschloro-Zopiclone N-(5-Chloro-2-pyridinyl)-3-(hydroxyMethyl)-2-pyrazinecarboxaMide Zopiclone Impurity 3 ZOPICLONE N-OXIDE RP 48497 (Eszopiclone Impurity C)