1-Oxo-3-(N-metil-N-etil)ammino-1H-nafto(2,1-b)pirano [Italian] 1H-NAPHTHO(2,1-b)PYRAN-1-ONE, 3-(ETHYLMETHYLAMINO)- 3-(N-Ethyl-N-methyl)amino-1H-naphtho(2,1-b)pyran-1-one 5-18-11-00497 (Beilstein Handbook Reference) 52053-74-4 BRN 1645590 K 8409 NSC 292796