1H-Naphtho(2,1-b)pyran-1-one, 3-(dipropylamino)-5-methoxy- 3-(Dipropylamino)-5-methoxy-1H-naphtho(2,1-b)pyran-1-one 5-18-12-00067 (Beilstein Handbook Reference) 57944-46-4 BRN 1655957 K 9847