Ligand profile

CHEMBL2331768

Bioactivity hit from ChEMBL on a similar protein.

Bound to: KP13_01863 — Carbonic anhydrase 2

Via homolog UniProt Q5AJ71 Formula C₁₉H₁₈N₄O₃S
pchembl 7.14 ~72.4 nM
Mol. weight 382.45 Da
Permeability Check
PAINS Clean

Identifiers

Database identifiers and provenance.

Ligand ID
CHEMBL2331768
UniProt (similar protein)
Q5AJ71
pchembl
7.140 (~72.4 nM)
Target protein
KP13_01863

Structure

2D representation rendered from SMILES.

Physicochemical properties

Computed with RDKit from SMILES.

Molecular weight 382.45 Da
LogP (Crippen) 3.61
H-bond donors 4
H-bond acceptors 3
TPSA 113.32 Ų
Rotatable bonds 5
Aromatic rings 3 / 3
Heavy atoms 27
Fraction sp³ C 0.00
Formula C₁₉H₁₈N₄O₃S

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 113.3
  • −1 ≤ LogP ≤ 5 3.61
Lipinski's Rule of Five Pass 0 violations
  • MW ≤ 500 Da 382.4
  • LogP ≤ 5 3.61
  • H-bond donors ≤ 5 4
  • H-bond acceptors ≤ 10 3
Veber's rules Pass
  • Rotatable bonds ≤ 10 5
  • TPSA ≤ 140 Ų 113.3
PAINS Clean

No PAINS structural alerts detected.

Chemical representations

Canonical representations for cheminformatics workflows.

SMILES 
NS(=O)(=O)Nc1ccc(NC(=O)Nc2ccccc2-c2ccccc2)cc1
InChI 
InChI=1S/C19H18N4O3S/c20-27(25,26)23-16-12-10-15(11-13-16)21-19(24)22-18-9-5-4-8-17(18)14-6-2-1-3-7-14/h1-13,23H,(H2,20,25,26)(H2,21,22,24)
InChIKey 
TVLLMAWPUQUHII-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)