All
 D03 Heterocyclic Compounds D006571 +
 D03.661 Heterocyclic Oxides D006577 +
 D03.661.243 Cyclic N-Oxides D003497 +
 D03.661.243.930 Triacetoneamine-N-Oxyl D014216 
 D03.661.243.320 4-Hydroxyaminoquinoline-1-oxide D015108 
 D03.661.243.500 4-Nitroquinoline-1-oxide D015112