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CA2 · ChEMBL activity 2259058

Ki source measurement: = 8.72 uM. No cross-assay comparison is prequalified.

Assay activity2259058Admitted release record

Source assertion

ChEMBL direct single-protein activity record with source-reported and source-standardized lexical values preserved.
Evidence ID
ACTIVITY:ChEMBL_37:2259058
Subject dossier
ca2
Source chain
uniprot + chembl
Upstream record
2259058
Corpus snapshot
2026-07-14T09:23:31Z
Admission status
Admitted release record

Lossless activity measurement

Source-reported value
= 8.72 uM
Source-standardized value
= 8720.0 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
5.06

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
2259058
Target
CHEMBL205 · SINGLE PROTEIN
Assay
CHEMBL1002074 · 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 carbonic anhydrase 2 esterase activity by non-competitive Lineweaver-Burke plot

Compound identity

Molecule
CHEMBL421 · SULFASALAZINE
Parent form
CHEMBL421 · is_parent_form=true
Molecule type
Small molecule
Chirality source code
2
Standard InChIKey
NCEXYHBECQHGNR-QZQOTICOSA-N
Canonical SMILES
O=C(O)c1cc(/N=N/c2ccc(S(=O)(=O)Nc3ccccn3)cc2)ccc1O
Standard InChI
InChI=1S/C18H14N4O5S/c23-16-9-6-13(11-15(16)18(24)25)21-20-12-4-7-14(8-5-12)28(26,27)22-17-3-1-2-10-19-17/h1-11,23H,(H,19,22)(H,24,25)/b21-20+

Document

In vitro inhibition of salicylic acid derivatives on human cytosolic carbonic anhydrase isozymes I and II.

Bayram E, Senturk M, Kufrevioglu OI, Supuran CT.

ChEMBL document
CHEMBL1152236
Journal / year
Bioorg Med Chem · 2008
PubMed
18819808

Comparison state

Prequalified
No — pairwise evaluation is still required
Protein identity
P00918 · 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/P00918.jsoned44906dd1b976f4c8b0399e9e3a7a4af09b673c035a201e218a4880821c1179Open exact source
2026-07-14T09:22:21Zraw/chembl/targets/CHEMBL205.jsona72211a98500a9ee255af420c327df455642440f828570896f227f637ac4d991Open exact source
2026-07-14T09:22:24Zraw/chembl/direct-assays/CHEMBL205.jsond77687649ad2c1120e6590de641bdef7dd078d9d00a04b12d1196c7031cceb65Open exact source
2026-07-14T09:22:50Zraw/chembl/assay-activities/CHEMBL1002074.jsonfbaff35bf52d3d25c1fd568a37e6dc5219b7a179e087d114fd0de031c4ed6accOpen exact source
2026-07-14T09:23:18Zraw/chembl/activities/2259058.jsonc5f4d9d420436f08b65debfddbe1fd6e41eed8cfd0006b4418650d3e802b87b5Open exact source
2026-07-14T09:23:18Zraw/chembl/assays/CHEMBL1002074.jsonb03f713838667948605bcad770bf6237238c8dffc5cedc4715423db981d86674Open exact source
2026-07-14T09:23:16Zraw/chembl/molecules/CHEMBL421.json1c3533138be7d06cb55fcdea1c59b78dd6cd8fdf33720bf5fd4f109380cba3e4Open exact source
2026-07-14T09:23:15Zraw/chembl/documents/CHEMBL1152236.jsonfb726436f5f7c23d80784a02dc4a3b2bdd6e1e37f48047bb8a0155fbc4250001Open exact source