1H-NAPHTHO(2,1-b)PYRAN-1-ONE, 3-(ETHYLAMINO)- 3-(Ethylamino)-1H-naphtho(2,1-b)pyran-1-one 3-Etilamminonafto(2,1-b)piran-1-oni [Italian] 71510-99-1 BRN 1644033 K 12479