p. 4795 - 4799
(2000)9-phenyl-8,9-dihydro-7H-phenaleno[1,2-b]furan-7-one
2-(4-Benzhydrylidene-cyclohexa-2,5-dienylidene)-phenalene-1,3-dione
1.3-Dioxo-dihydro-phenalen-(2 azo 2)-benzoylessigsaeure-aethylester
1.3-Dioxo-dihydro-phenalen-(2 azo 2)-cyclohexandion-(1.3)
phenalene-1,3-dione