7-Hydroxy-furo[3,4-b]pyrazin-5-one is a derivative of 6-(5-Chloro-2-pyridyl)-6,7-dihydro-7-hydroxy-5H-pyrrolo[3,4-b]pyrazin-5-one (C379925) which is an impurity of Eszopiclone (E889150), a nonbenzodiazepine hypnotic agent used as a treatment for insomnia.
