As of 2022-03-07, the Wikidata property ChemSpider ID (P661) is used on 124,675 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P31 instance of 124,622
 0.0013
P235 InChIKey 124,216
 0.0950
P233 canonical SMILES 123,490
 0.1401
P234 InChI 122,245
 0.0939
P662 PubChem CID 121,329
 0.1257
P274 chemical formula 120,448
 0.1148
P2067 mass 120,422
 0.3550
P231 CAS Registry Number 74,671
 0.0753
P683 ChEBI ID 60,490
 0.3516
P2017 isomeric SMILES 58,831
 0.1384
P652 UNII 57,112
 0.4205
P3117 DSSTox substance ID 52,678
 0.0571
P8494 DSSTOX compound identifier 52,275
 0.0568
P592 ChEMBL ID 49,057
 0.3897
P232 EC number 30,459
 0.2034
P2566 ECHA InfoCard ID 30,323
 0.2024
P1579 Reaxys registry number 18,573
 0.1482
P3636 PDB ligand ID 18,134
 0.1409
P703 found in taxon 17,081
 0.0063
P638 PDB structure ID 17,069
 0.1271
P665 KEGG ID 14,735
 0.1134
P2840 NSC number 14,457
 0.0652
P646 Freebase ID 14,225
 0.0031
P117 chemical structure 13,627
 0.1072
P6366 Microsoft Academic ID 12,144
 0.0318
P7049 AICS Chemical ID (former scheme) 10,962
 0.0842
P715 DrugBank ID 10,903
 0.0865
P4964 SPLASH 7,607
 0.0609
P595 Guide to Pharmacology Ligand ID 6,632
 0.0529
P2063 LIPID MAPS ID 6,582
 0.0464
P3345 RxNorm ID 6,519
 0.0512
P2671 Google Knowledge Graph ID 6,305
 0.0008
P486 MeSH descriptor ID 6,190
 0.0398
P6689 MassBank accession ID 6,119
 0.0472
P2057 Human Metabolome Database ID 5,908
 0.0473
P279 subclass of 5,832
 0.0021
P679 ZVG number 5,688
 0.0451
P2868 subject has role 5,643
 0.0123
P2062 HSDB ID 5,240
 0.0419
P527 has part or parts 4,614
 0.0058
P2101 melting point 4,462
 0.0295
P2064 KNApSAcK ID 4,131
 0.0331
P3073 CosIng number 4,028
 0.0320
P373 Commons category 4,025
 0.0011
P361 part of 3,871
 0.0012
P18 image 3,393
 0.0008
P10283 OpenAlex ID 3,388
 0.0153
P1578 Gmelin number 2,915
 0.0233
P2115 NDF-RT ID 2,864
 0.0229
P267 ATC code 2,780
 0.0221

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P652 UNII 57,112
 0.4205
P592 ChEMBL ID 49,057
 0.3897
P2067 mass 120,422
 0.3550
P683 ChEBI ID 60,490
 0.3516
P232 EC number 30,459
 0.2034
P2566 ECHA InfoCard ID 30,323
 0.2024
P1579 Reaxys registry number 18,573
 0.1482
P3636 PDB ligand ID 18,134
 0.1409
P233 canonical SMILES 123,490
 0.1401
P2017 isomeric SMILES 58,831
 0.1384
P638 PDB structure ID 17,069
 0.1271
P662 PubChem CID 121,329
 0.1257
P274 chemical formula 120,448
 0.1148
P665 KEGG ID 14,735
 0.1134
P117 chemical structure 13,627
 0.1072
P235 InChIKey 124,216
 0.0950
P234 InChI 122,245
 0.0939
P715 DrugBank ID 10,903
 0.0865
P7049 AICS Chemical ID (former scheme) 10,962
 0.0842
P231 CAS Registry Number 74,671
 0.0753
P2840 NSC number 14,457
 0.0652
P4964 SPLASH 7,607
 0.0609
P3117 DSSTox substance ID 52,678
 0.0571
P8494 DSSTOX compound identifier 52,275
 0.0568
P595 Guide to Pharmacology Ligand ID 6,632
 0.0529
P3345 RxNorm ID 6,519
 0.0512
P2057 Human Metabolome Database ID 5,908
 0.0473
P6689 MassBank accession ID 6,119
 0.0472
P2063 LIPID MAPS ID 6,582
 0.0464
P679 ZVG number 5,688
 0.0451
P2062 HSDB ID 5,240
 0.0419
P486 MeSH descriptor ID 6,190
 0.0398
P2064 KNApSAcK ID 4,131
 0.0331
P3073 CosIng number 4,028
 0.0320
P6366 Microsoft Academic ID 12,144
 0.0318
P2101 melting point 4,462
 0.0295
P1578 Gmelin number 2,915
 0.0233
P2115 NDF-RT ID 2,864
 0.0229
P267 ATC code 2,780
 0.0221
P4168 IEDB Epitope ID 2,505
 0.0200
P7025 HCIS ID 2,399
 0.0190
P8691 SwissLipids identifier 2,497
 0.0179
P2892 UMLS CUI 2,498
 0.0170
P2275 World Health Organisation international non-proprietary name 2,094
 0.0168
P10283 OpenAlex ID 3,388
 0.0153
P9066 FL number 1,892
 0.0151
P657 RTECS number 1,613
 0.0129
P2175 medical condition treated 1,540
 0.0123
P2868 subject has role 5,643
 0.0123
P5220 ICSC ID 1,520
 0.0122