101909 ⎘
Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position; Anthraquinone acridones or thioxanthrones; Anthraquinone thioxanthrones Compounds containing thioxanthrone and carbazole rings