| NADA | N-acetyldopamine |
| Dehydro NADA | 1,2-Dehydro-N-acetyldopamine |
| DHI | 5,6-Dihydroxyindole |
| DHICA | 5,6-Dihydroxyindole-2-carboxylic acid |
| NBAD | N-β-alanyldopamine |
| Dehydro NBAD | 1,2-Dehydro-N-β-alanyldopamine |
| DCT | Dopachrome tautomerase |
| DCDT | Dopachrome decarboxylase/tautomerase |