2,7-Bis(1-oxo-5-(piperidino)pentyl)-9H-xanthen-9-one 37972-07-9 5-20-03-00444 (Beilstein Handbook Reference) 9H-Xanthen-9-one, 2,7-bis(1-oxo-5-(piperidino)pentyl)- BRN 1276085