4-pyrrolidino-1,5-dihydroxy-9,10-anthraquinone

4-ethylenedioxy-(3-nitromethyl)-pentanal

1,4-dioxo-1,2,3,4-tetrahydro-5,9,10-trihydroxyanthracene(leuco 1,4,5-trihydroxy-9,10-anthraquinone)

2-[2,5-Dimethoxy-benzoyl]-6-methoxy-benzoesaeure

5-hydroxy-1,4-dimethoxyanthraquinone