the carbon skeleton being further substituted by singly-bound oxygen atoms

Compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly-bound oxygen atoms not being part of a —CHO group, e.g. amino ketones > the carbon skeleton containing carbon atoms of quinone rings > having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings > of condensed quinone ring systems formed by at least three rings > Amino anthraquinones > the carbon skeleton being further substituted by singly-bound oxygen atoms

Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones > the carbon skeleton containing carbon atoms of quinone rings > having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings > of condensed quinone ring systems formed by at least three rings > Amino anthraquinones > the carbon skeleton being further substituted by singly-bound oxygen atoms