

| Drug common name | Triapine |
| INN | — |
| Description | 3-Aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP, also called Triapine) is substance of interest for the treatment of cancer. It is a thiosemicarbazone derivative of 3-aminopyridine-2-carboxaldehyde. It presents an N-N-S array of donor sites that strongly bind iron, robbing iron-containing enzymes of their prosthetic group.
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| Classification | Small molecule |
| Drug class | tricyclic compounds |
| Image (chem structure or protein) | ![]() |
| Structure (InChI/SMILES or Protein Sequence) | NC(=S)N/N=C/c1ncccc1N |
| PDB | — |
| CAS-ID | 143621-35-6 |
| RxCUI | — |
| ChEMBL ID | CHEMBL231616 |
| ChEBI ID | — |
| PubChem CID | 9571836 |
| DrugBank | — |
| UNII ID | — |