phosphonium,triphenyl,tetrahydro,pyran,propyl,iodide,2h-pyran,tetrahydro-2h-pyran,tetrahydro-2h-pyran-2-yl
2H-pyran
30213-35-58-[(3,6-Dihydro-6-oxo-2H-pyran-2-yl)hydroxymethyl]-4-(1-oxoheptyl)-3-hydroxy-1,5-cyclononadiene-1,2,5,6-tetracarboxylic 1,2:5,6-dianhydride