| Member | Definition | Role |
|---|
| 3-[(4-fluorophenyl)methylthio]-6-pyridin-4-yl-[1,2,4]triazolo[4,3-b]pyridazine | | 3-[(4-fluorophenyl)methylthio]-6-pyridin-4-yl-[1,2,4]triazolo[4,3-b]pyridazine |
| 3-methyl-6-(1-pyrrolidinyl)-[1,2,4]triazolo[4,3-b]pyridazine | | 3-methyl-6-(1-pyrrolidinyl)-[1,2,4]triazolo[4,3-b]pyridazine |
| 3-methyl-6-prop-2-enoxy-[1,2,4]triazolo[4,3-b]pyridazine | | 3-methyl-6-prop-2-enoxy-[1,2,4]triazolo[4,3-b]pyridazine |
| 6-(2-furanyl)-3-(2-pyridinylmethylthio)-[1,2,4]triazolo[4,3-b]pyridazine | | 6-(2-furanyl)-3-(2-pyridinylmethylthio)-[1,2,4]triazolo[4,3-b]pyridazine |
| AMG-208 | A member of the class of quinolines that is 7-methoxyquinoline substituted at position 4 by a (6-phenyl[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methoxy group. AMG exhibits antitumour activity, particularly in prostate cancer. | AMG-208 |
| sgx 523 | A member of the class of triazolopyridazines that is 6-(1-methylpyrazol-4-yl)[1,2,4]triazolo[4,3-b]pyridazine-3-thiol in which the thiol hydrogen is replaced by a quinolin-6-yl group. | SGX-523 |