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CA5B · ChEMBL activity 2491984

Ki source measurement: = 9.0 nM. No cross-assay comparison is prequalified.

Assay activity2491984Admitted release record

Source assertion

ChEMBL direct single-protein activity record with source-reported and source-standardized lexical values preserved.
Evidence ID
ACTIVITY:ChEMBL_37:2491984
Subject dossier
ca5b
Source chain
uniprot + chembl
Upstream record
2491984
Corpus snapshot
2026-07-14T09:23:31Z
Admission status
Admitted release record

Lossless activity measurement

Source-reported value
= 9.0 nM
Source-standardized value
= 9.0 nM
Reported endpoint
Ki
Standardized endpoint
Ki
Reported upper bound
not reported in admitted source fields
Reported text value
not reported in admitted source fields
Standardization flag
1
pChEMBL from source
8.05

Reported and source-standardized fields are displayed separately and retain their exact lexical values. The standardized field does not overwrite the upstream report.

Record-local comparison refusalCONDITION_MISSING

No cross-assay comparison is authorized by this record. Evaluate target, construct, endpoint, relation, units, assay format, conditions, and exact molecular form first.

Assay and target

ChEMBL activity
2491984
Target
CHEMBL3969 · SINGLE PROTEIN
Assay
CHEMBL1029734 · Binding (B)
BAO format
BAO_0000357 · single protein format
BAO endpoint
BAO_0000192
Target confidence
9 · Direct single protein target assigned
Source quality flags
potential_duplicate=0 · data_validity_comment=not reported in admitted source fields
Upstream assay description

Inhibition of human recombinant full length CA5B by stopped-flow CO2 hydration method

Compound identity

Molecule
CHEMBL1055 · CHLORTHALIDONE
Parent form
CHEMBL1055 · is_parent_form=true
Molecule type
Small molecule
Chirality source code
0
Standard InChIKey
JIVPVXMEBJLZRO-UHFFFAOYSA-N
Canonical SMILES
NS(=O)(=O)c1cc(C2(O)NC(=O)c3ccccc32)ccc1Cl
Standard InChI
InChI=1S/C14H11ClN2O4S/c15-11-6-5-8(7-12(11)22(16,20)21)14(19)10-4-2-1-3-9(10)13(18)17-14/h1-7,19H,(H,17,18)(H2,16,20,21)

Document

Carbonic anhydrase inhibitors. Comparison of chlorthalidone, indapamide, trichloromethiazide, and furosemide X-ray crystal structures in adducts with isozyme II, when several water molecules make the difference.

Temperini C, Cecchi A, Scozzafava A, Supuran CT.

ChEMBL document
CHEMBL1143325
Journal / year
Bioorg Med Chem · 2009
PubMed
19119014

Comparison state

Prequalified
No — pairwise evaluation is still required
Protein identity
Q9Y2D0 · taxon 9606
Variant / construct
not reported in admitted source fields / not reported in admitted source fields
Conditions
pH not reported in admitted source fields · temperature not reported in admitted source fields °C · substrate not reported in admitted source fields · buffer not reported in admitted source fields

Snapshot provenance

Each retained corpus build input is identified by retrieval time, snapshot path, SHA-256 digest, and exact upstream request. The snapshot files are not embedded in the served binary; the provenance identifiers remain dependencies of this one admitted record, not interchangeable citations.

RetrievedSnapshotSHA-256Upstream request
2026-07-14T09:21:31Zraw/uniprot/entries/Q9Y2D0.json430b3d69868adbaae7308eb09024622b7511635833c3885bcfe5e6a2ec9fa841Open exact source
2026-07-14T09:22:20Zraw/chembl/targets/CHEMBL3969.json44a660b75862cc9f5802d8227eef69ccef57054f12c07fca857d78efcef44b3dOpen exact source
2026-07-14T09:22:34Zraw/chembl/direct-assays/CHEMBL3969.json9e61fe50f58da5d7efd5e2730000f7e541b436a9447f38e51565aa8d97670681Open exact source
2026-07-14T09:22:57Zraw/chembl/assay-activities/CHEMBL1029734.json440053fb0abf7df02c5dab1bc10358cc11292074cd6fbbfa06c470fd5fcbac74Open exact source
2026-07-14T09:23:24Zraw/chembl/activities/2491984.jsonc030191b06f21e07909629e2b27368aac2e59c10013a938d66e40040d268e213Open exact source
2026-07-14T09:23:24Zraw/chembl/assays/CHEMBL1029734.json8dca64f9b766c184fc6732808ef139b498c4ec45067dce43cc05cf4b5d2ef9e8Open exact source
2026-07-14T09:23:20Zraw/chembl/molecules/CHEMBL1055.jsonbcb4e644c6e9bf753eecc777d7b17904cc4ab7dba2462b20225e863d19a96e02Open exact source
2026-07-14T09:23:20Zraw/chembl/documents/CHEMBL1143325.json990abd6d9ff57eb2de561cab375f1e27990c7e2f3d4ca6fb92a84c27ff14d918Open exact source