Ligand profile

ZINC5739708

Virtual-screening candidate from ZINC.

Bound to: KP13_04981 — FMN-dependent NADH-azoreductase

Via homolog UniProt C0STY1 Formula C₂₀H₁₉N₃O₃S
Tanimoto 0.70
Mol. weight 381.46 Da
Permeability High
PAINS Alert

Identifiers

Database identifiers and provenance.

Ligand ID
ZINC5739708
UniProt (similar protein)
C0STY1
Tanimoto
0.698
Target protein
KP13_04981

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 381.46 Da
LogP (Crippen) 4.75
H-bond donors 1
H-bond acceptors 5
TPSA 82.33 Ų
Rotatable bonds 4
Aromatic rings 3 / 4
Heavy atoms 27
Fraction sp³ C 0.20
Formula C₂₀H₁₉N₃O₃S

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 82.3
  • −1 ≤ LogP ≤ 5 4.75
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 381.5
  • LogP ≤ 5 4.75
  • H-bond donors ≤ 5 1
  • H-bond acceptors ≤ 10 5
Veber's rules Pass
  • Rotatable bonds ≤ 10 4
  • TPSA ≤ 140 Ų 82.3
PAINS Alert

Matches PAINS filter: azo_A(324). May be a frequent false positive in HTS — review carefully.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
O=S(=O)(c1ccc(/N=N/c2ccc(O)c3ccccc23)cc1)N1CCCC1
InChI 
InChI=1S/C20H19N3O3S/c24-20-12-11-19(17-5-1-2-6-18(17)20)22-21-15-7-9-16(10-8-15)27(25,26)23-13-3-4-14-23/h1-2,5-12,24H,3-4,13-14H2/b22-21+
InChIKey 
NLEBUIWARLVMDY-QURGRASLSA-N

Provenance

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

Method
LigQ nearest_k
Query
ORI
Homolog
C0STY1

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_04981.

PDB 13

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

Ligand PDB entry

ZINC 49

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

Compound Similarity (Tanimoto)