956569-49-6

2-(5-methoxy-4,8,8-trimethyl-2-oxo-9,10-dihydropyrano[2,3-h]chromen-3-yl)acetic acid 2-{5-Methoxy-4,8,8-trimethyl-2-oxo-2H,8H,9H,10H-pyrano[2,3-h]chromen-3-yl}acetic acid 2-(5-Methoxy-4,8,8-trimethyl-2-oxo-9,10-dihydro-2h,8h-pyrano[2,3-f]chromen-3-yl)acetic acid 2H,8H-Benzo[1,2-b:3,4-b']dipyran-3-acetic acid, 9,10-dihydro-5-methoxy-4,8,8-trimethyl-2-oxo-