2-Propenoic acid, 3-(7-hydroxy-5-methoxy-2,2-dimethyl-2H-1-benzopyran-6-yl)-, .delta.-lactone 2H,8H-Benzo[1,2-b:5,4-b']dipyran-2-one, 5-methoxy-8,8-dimethyl- 84-99-1 NSC35542 XANTHOXYLETIN Xanthoxylin N