1H-NAPHTHO(2,1-b)PYRAN-1-ONE, 3-(DIMETHYLAMINO)- 3-(Dimethylamino)-1H-naphtho(2,1-b)pyran-1-one 3-Dimetilamminonafto(2,1-b)piran-1-oni [Italian] 35299-76-4 5-18-11-00496 (Beilstein Handbook Reference) BRN 1314154 K 8291 NSC 292795