2-Butenoic acid, 2-methyl-, (9R,10R)-9-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2H,8H-benzo[1,2-b:3,4-b']dipyran-10-yl ester, (2Z)- [13161-75-6]2-Butenoic acid, 2-methyl-, (9R,10R)-9-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oSKU: 13161756Add to Quote