Resolved chemical identity

5-methyl-2-piperidin-4-yl-6-pyridin-4-yl-pyridazin-3-one

Deposited research ligand · no curated assay

complete_deposited_InChIKey

0 assay / association records0 preparations1 research-ligand PDB entries

Clinical / development status: Not independently curated. A chemical probe classification does not imply medicinal approval.

Identity is separate from preparation

Chemical identity

Stable identity: INCHIKEY:DDBCCLBDEPERNR-UHFFFAOYSA-N
Full InChIKey: DDBCCLBDEPERNR-UHFFFAOYSA-N
Source identity status: complete deposited InChIKey
Deposited CCD identifiers: EHK
External identifiers: See deposited identity and source links

Reference formula: C15H18N4O
Calculated molecular weight: 270.336
Calculated descriptors: cLogP 1.5382 · TPSA 59.81 Å² · HBD 1 · HBA 5RDKit 2025.09.3; calculations for this source identity, not experimental measurements.
Depiction validation: verified smiles full inchikey match

SMILES, InChI & complete identity record

Isomeric SMILES: CC1=CC(=O)N(N=C1c2ccncc2)C3CCNCC3
InChI: Not curated

{
  "aliases": [
    "5-methyl-2-piperidin-4-yl-6-pyridin-4-yl-pyridazin-3-one"
  ],
  "ccd_ids": [
    "EHK"
  ],
  "ccd_names": "[\"5-methyl-2-piperidin-4-yl-6-pyridin-4-yl-pyridazin-3-one\"]",
  "ccd_types": "[\"non-polymer\"]",
  "chemical_id": "INCHIKEY:DDBCCLBDEPERNR-UHFFFAOYSA-N",
  "connectivity_block": "DDBCCLBDEPERNR",
  "curated_source_sha256": null,
  "curation_version": "frozen-v1.2",
  "external_identifiers": {},
  "formal_charge_by_ccd": "{\"EHK\": 0}",
  "formulae": "[\"C15 H18 N4 O\"]",
  "geometry_note": "CCD ideal SDF is a reference chemical geometry, not a deposited bound pose.",
  "identity_status": "complete_deposited_InChIKey",
  "inchikey": "DDBCCLBDEPERNR-UHFFFAOYSA-N",
  "inventory_origin": "v1_CCD_inventory",
  "isomeric_smiles": "CC1=CC(=O)N(N=C1c2ccncc2)C3CCNCC3",
  "primary_name": "5-methyl-2-piperidin-4-yl-6-pyridin-4-yl-pyridazin-3-one",
  "retrieval_date": "2026-10-24",
  "smiles_stereo_by_ccd": "{\"EHK\": \"CC1=CC(=O)N(N=C1c2ccncc2)C3CCNCC3\"}",
  "source_metadata_sha256": "{\"EHK\": \"5fd22c6ea6d4b8ed217735727971da14c1febf3ca3b810e4975f9fe19c410a95\"}",
  "source_urls": [
    "https://www.rcsb.org/ligand/EHK"
  ]
}

Measured target and original context

Bioactivity & experimental observations

Download assay CSV

Each row is one source-specific observation. Repeated measurements of this compound are not independent compounds. Direct binding, functional displacement and cellular outcomes retain their distinct endpoints.

Preparation	Tested target & construct	Method / endpoint	Original observation	Conditions & uncertainty	Source & verification
No observations match these filters. Missing curation is not evidence of biological inactivity.

Exact deposited instances

Experimental structures

Native-core and broader Pfam proximity are distinguished from contacts elsewhere in a protein. Each action opens the actual deposited ligand instance. Geometric proximity does not supply a measured binding affinity.

Entry / ligand	Native domain & protein chain	Geometric evidence	Minimum distance	Inspect
6G29 · EHKPDB:6G29:LIG:B:EHK:401:.	NSD3 PWWP1Protein label chain A · ligand label chain B	native annotation core contactexperimentally studied ligandreported studied structural ligand · research ligand. Deposited geometry is not solution affinity.	Core: 2.7729 Å Pfam: 2.7729 Å	View deposited instance

Preparations, identities and controls remain separate

Experimental context

No measured preparation is linked to this deposited identity in the curated snapshot.

Provenance and reproducibility

Sources & downloads

https://www.rcsb.org/ligand/EHK

Download complete evidence JSON Curation methods & source receipts

Snapshot 2026-10-26 · phase5-1.0.0 · original measurements, operators, constructs and uncertainty are retained in the exports.