Purpurinamide

4-Aminoxanthopurpurin

1-amino-2,4-dihydroxyanthraquinone

1-Amino-2,4-dihydroxy-9,10-anthraquinone

1-amino-2,4-dihydroxyanthracene-9,10-dione

1-azanyl-2,4-dihydroxy-anthracene-9,10-dione