5H-Pyrrolo[3,4-b]pyrazine, 1-piperazinecarboxylic acid deriv.-D8;Desmethylzopiclone-D8;N-Demethylzopiclone-D8;N-Desmethyl zopiclone-D8;Norzopiclone-D8;RP 32273-D8;6-(5-Chloropyridin-2-yl)-7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyrazin-5-yl piperazine-1-carboxylate-D8
