1-Naphthaleneacrylic acid, 5-(carboxymethylene)-6alpha-(3-furylhydroxymethyl)-1,4,4a,5,6,7,8,8abeta-octahydro-1alpha-(hydroxymethyl)-2-isopropyl-4aalpha,6-dimethyl-4-oxo-, di-delta-lactone 987-99-5 Citrolin Spiro(2H-naphtho(2,1-c)pyran-7(4H),3'(6'H)-(2H)pyran)-2,6',10(4aH- )-trione: 4-(3-furanyl)-5,6,6a,10a-tetrahydro-4a,10a-dimethyl-