1H-NAPHTHO(2,1-b)PYRAN-1-ONE, 3-(DIETHYLAMINO)- 3-(Diethylamino)-1H-naphtho(2,1-b)pyran-1-one 3-Dietilamminonafto(2,1-b)piran-1-oni [Italian] 33470-03-0 5-18-11-00497 (Beilstein Handbook Reference) BRN 1646206 K 8292