Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems being formed by at least three rings
Compounds containing amino and hydroxy groups bound to the same carbon skeleton having hydroxy groups and amino groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings being part of condensed ring systems being formed by at least three rings