| Member | Definition | Role |
|---|
| 4-nitroquinoline-1-oxide | A quinoline N-oxide carrying a nitro substituent at position 4. | 4-nitroquinoline N-oxide |
| 8-hydroxyquinoline N-oxide | A quinoline N-oxide carrying a hydroxy substituent at position 8. | 8-hydroxyquinoline N-oxide |
| aurachin a | An A-type aurichin that is 1,2-dihydrofuro[2,3-c]quinoline 5-oxide which is substituted at position 2 by a (6E)-10-hydroxy-2,6-dimethylundeca-2,6-dien-10-yl group and at position 4 by a methyl group (relative configuration shown). Found in the myxobacterium Stigmatella aurantiaca strain Sg a15. | aurachin A |
| aurachin b | An A-type aurachin that is quinoline N-oxide which is substituted by a methyl group at position 2, a hydroxy group at position 3, and a triprenyl group at position 4. | aurachin B |