![Chemical structure of 1H-Pyrazolo[3,4-d]pyridazin-4(5H)-one, CAS 13521-25-0](https://api.angenesci.com/structure/354/13521-25-0.png)
| CAS Number | 13521-25-0 |
| Catalog Number | AG009GF7(AGN-PC-0NI7F0) |
| Chemical Name | 1H-Pyrazolo[3,4-d]pyridazin-4(5H)-one |
| IUPAC Name | 1,5-dihydropyrazolo[3,4-d]pyridazin-4-one |
| InChI | InChI=1S/C5H4N4O/c10-5-3-1-6-8-4(3)2-7-9-5/h1-2H,(H,6,8)(H,9,10) |
| InChI Key | RBWFEMOYMLQPAV-UHFFFAOYSA-N |
| MDL Number | MFCD20040094 |
| Molecular Formula | C5H4N4O |
| Molecular Weight | 136.1115 |
| SMILES | O=C1C2=C(NN=C2)C=NN1 |
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