2H-1-Benzopyran-2-one, 4-hydroxy-3-(1-naphthalenyl)- (9CI) 2H-1-Benzopyran-2-one, 4-hydroxy-3-(alpha-naphthyl)- 39923-41-6 4-Hydroxy-3-(1-naphthyl)coumarin 4-Hydroxy-3-(alpha-naphthyl)-2H-1-benzopyran-2-one 4-Hydroxy-3-(alpha-naphthyl)coumarin 5-18-02-00410 (Beilstein Handbook Reference) BRN 1289402 COUMARIN, 4-HYDROXY-3-(alpha-NAPHTHYL)- NSC 240925