3-Benzyl-7-methoxy-3-alpha-oxido-4-chromanone 57330-62-8 7-Methoxy-3'-phenylspiro(2H-1-benzopyran-3(4H),2'-oxiran)-4-one BRN 5580103 Spiro(2H-1-benzopyran-3(4H),2'-oxiran)-4-one, 7-methoxy-3'-phenyl-