Ligand profile

ZINC18246980

Virtual-screening candidate from ZINC.

Bound to: KP13_04217 — Thioredoxin reductase

Via homolog UniProt C4LW95 Formula C₂₁H₁₆N₂O₃S
Tanimoto 1.00
Mol. weight 376.44 Da
Permeability High
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC18246980
UniProt (similar protein)
C4LW95
Tanimoto
1.000
Target protein
KP13_04217

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 376.44 Da
LogP (Crippen) 4.79
H-bond donors 1
H-bond acceptors 5
TPSA 66.04 Ų
Rotatable bonds 4
Aromatic rings 3 / 4
Heavy atoms 27
Fraction sp³ C 0.05
Formula C₂₁H₁₆N₂O₃S

Drug-likeness

Descriptor-based ADME screening flags from SMILES. These are not experimental toxicity results.

Permeability proxy High

Estimated from TPSA and LogP only: TPSA ≤ 90 Ų and −1 ≤ LogP ≤ 5 are treated as a favorable small-molecule permeability screen.

  • TPSA ≤ 90 Ų 66.0
  • −1 ≤ LogP ≤ 5 4.79
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 376.4
  • LogP ≤ 5 4.79
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 66.0
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=C1/C(=C\c2ccc(O)cc2)S/C(=N/c2ccccc2)N1Cc1ccco1
InChI 
InChI=1S/C21H16N2O3S/c24-17-10-8-15(9-11-17)13-19-20(25)23(14-18-7-4-12-26-18)21(27-19)22-16-5-2-1-3-6-16/h1-13,24H,14H2/b19-13+,22-21+
InChIKey 
IDLTVWNJYIPTEI-HNPUNDFXSA-N

Provenance

Annotation context from LigQ_2, the internal Target step that collects PDB, ChEMBL, and ZINC ligand evidence.

Method
LigQ nearest_k
Query
CHEMBL3976958
Homolog
C4LW95

External resources

Open this ligand in third-party databases and cheminformatics tools.

Other ligands for this protein

Quick navigation to other ligands bound to KP13_04217.

PDB 5

Ligands co-crystallized with this protein (structural evidence).

Ligand PDB entry

ChEMBL 16

Compounds with measured inhibitory activity on this target (higher pchembl = more potent).

Compound Potency (pchembl)

ZINC 49

Virtual screening candidates selected by structural similarity to known actives (Tanimoto ≥ 0.5).

Compound Similarity (Tanimoto)