Synonyms:
2-butenoic acid,2-methyl-,(9s,10s)-10-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2h,8h-benzo[1,2-b:3,4-b']dipyran-9-ylester, (2z)- ; (z)-2-methyl-2-butenoic acid [(9s,10s)-10β-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2h,8h-benzo[1,2-b:3,4-b']dipyran]-9β-yl ester ; praeruptorin a ; benzo[1,2-b:3,4-b']dipyran-9-ylester, (2z)- ; (+)-praeruptorin a ; 9,10-dihydro-9β-[(z)-1-oxo-2-methyl-2-butenyloxy]-10β-(acetyloxy)-8,8-dimethyl-2h,8h-benzo[1,2-b:3,4-b']dipyran-2-one ; 2-butenoicacid, 2-methyl-,10-(acetyloxy)-9,10-dihydro-8,8-dimethyl-2-oxo-2h,8h-benzo[1,2-b:3,4-b']dipyran-9-ylester, [9s-[9a(z),10a]]-
