Resolved chemical identity

1-[(1-methyl-1H-pyrazol-4-yl)methyl]piperazine

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:QQINQSPEYDVMCD-UHFFFAOYSA-N
Full InChIKey: QQINQSPEYDVMCD-UHFFFAOYSA-N
Source identity status: complete deposited InChIKey
Deposited CCD identifiers: A1A3T
External identifiers: See deposited identity and source links

Reference formula: C9H16N4
Calculated molecular weight: 180.255
Calculated descriptors: cLogP -0.1747 · TPSA 33.09 Å² · HBD 1 · HBA 4RDKit 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: Cn1cc(cn1)CN2CCNCC2
InChI: Not curated

{
  "aliases": [
    "1-[(1-methyl-1H-pyrazol-4-yl)methyl]piperazine"
  ],
  "ccd_ids": [
    "A1A3T"
  ],
  "ccd_names": "[\"1-[(1-methyl-1H-pyrazol-4-yl)methyl]piperazine\"]",
  "ccd_types": "[\"non-polymer\"]",
  "chemical_id": "INCHIKEY:QQINQSPEYDVMCD-UHFFFAOYSA-N",
  "connectivity_block": "QQINQSPEYDVMCD",
  "curated_source_sha256": null,
  "curation_version": "frozen-v1.2",
  "external_identifiers": {},
  "formal_charge_by_ccd": "{\"A1A3T\": 0}",
  "formulae": "[\"C9 H16 N4\"]",
  "geometry_note": "CCD ideal SDF is a reference chemical geometry, not a deposited bound pose.",
  "identity_status": "complete_deposited_InChIKey",
  "inchikey": "QQINQSPEYDVMCD-UHFFFAOYSA-N",
  "inventory_origin": "v1_CCD_inventory",
  "isomeric_smiles": "Cn1cc(cn1)CN2CCNCC2",
  "primary_name": "1-[(1-methyl-1H-pyrazol-4-yl)methyl]piperazine",
  "retrieval_date": "2026-10-24",
  "smiles_stereo_by_ccd": "{\"A1A3T\": \"Cn1cc(cn1)CN2CCNCC2\"}",
  "source_metadata_sha256": "{\"A1A3T\": \"7637c3d849d0b0327abc3221f5cdacd3faf9bb4e7c590d5a340a2224840471dd\"}",
  "source_urls": [
    "https://www.rcsb.org/ligand/A1A3T"
  ]
}

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
7HHH · A1A3TPDB:7HHH:LIG:J:A1A3T:103:.	HDGFL2 PWWP1Protein label chain A · ligand label chain J	native annotation core contactexperimentally deposited fragmentscreened fragment structure · research ligand. Deposited geometry is not solution affinity.	Core: 3.1573 Å Pfam: 3.1573 Å	View deposited instance
7HHH · A1A3TPDB:7HHH:LIG:J:A1A3T:103:.	HDGFL2 PWWP1Protein label chain B · ligand label chain J	native annotation core contactexperimentally deposited fragmentscreened fragment structure · research ligand. Deposited geometry is not solution affinity.	Core: 2.9486 Å Pfam: 2.9486 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/A1A3T

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.