Ligand profile

CHEMBL2331763

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_01863 — Carbonic anhydrase 2

Via homolog UniProt Q5AJ71 Formula C₁₃H₁₃N₅O₅S
pchembl 6.96 ~109.6 nM
Mol. weight 351.34 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL2331763
UniProt (similar protein)
Q5AJ71
pchembl
6.960 (~109.6 nM)
Target protein
KP13_01863

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 351.34 Da
LogP (Crippen) 1.85
H-bond donors 4
H-bond acceptors 5
TPSA 156.46 Ų
Rotatable bonds 5
Aromatic rings 2 / 2
Heavy atoms 24
Fraction sp³ C 0.00
Formula C₁₃H₁₃N₅O₅S

Drug-likeness

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

Permeability proxy Check

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 156.5
  • −1 ≤ LogP ≤ 5 1.85
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 351.3
  • LogP ≤ 5 1.85
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 5
Veber's rules Fail
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 156.5
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
NS(=O)(=O)Nc1ccc(NC(=O)Nc2cccc([N+](=O)[O-])c2)cc1
InChI 
InChI=1S/C13H13N5O5S/c14-24(22,23)17-10-6-4-9(5-7-10)15-13(19)16-11-2-1-3-12(8-11)18(20)21/h1-8,17H,(H2,14,22,23)(H2,15,16,19)
InChIKey 
FKHJQNPTIBCNKB-UHFFFAOYSA-N

Provenance

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

Method
LigQ nearest_k
Source
ChEMBL
Binding sites
PF00484

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_01863.

PDB 5

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

Ligand PDB entry

ChEMBL 99

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

Compound Potency (pchembl)

ZINC 50

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

Compound Similarity (Tanimoto)