As of 2022-03-07, the Wikidata property PubChem CID (P662) is used on 961,661 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
P235 InChIKey 960,968
 0.7352
P234 InChI 954,260
 0.7303
P231 CAS Registry Number 763,536
 0.6702
P3117 DSSTox substance ID 740,637
 0.6914
P8494 DSSTOX compound identifier 740,192
 0.6919
P661 ChemSpider ID 121,329
 0.1257
P683 ChEBI ID 101,254
 0.1046
P2840 NSC number 97,576
 0.1000
P652 UNII 57,427
 0.0591
P592 ChEMBL ID 49,434
 0.0514
P232 EC number 48,759
 0.0503
P2566 ECHA InfoCard ID 48,620
 0.0502
P3636 PDB ligand ID 21,593
 0.0224
P2063 LIPID MAPS ID 19,806
 0.0205
P1579 Reaxys registry number 18,836
 0.0196
P638 PDB structure ID 18,174
 0.0187
P8691 SwissLipids identifier 17,413
 0.0181
P665 KEGG ID 14,766
 0.0153
P646 Freebase ID 14,647
 0.0027
P7049 AICS Chemical ID (former scheme) 13,930
 0.0144
P6366 Microsoft Academic ID 12,486
 0.0102
P715 DrugBank ID 11,078
 0.0115
P6689 MassBank accession ID 10,822
 0.0113
P2671 Google Knowledge Graph ID 7,830
 0.0009
P4964 SPLASH 7,718
 0.0080
P595 Guide to Pharmacology Ligand ID 6,989
 0.0073
P3345 RxNorm ID 6,523
 0.0068
P679 ZVG number 6,404
 0.0067
P486 MeSH descriptor ID 6,262
 0.0063
P2057 Human Metabolome Database ID 5,957
 0.0062
P2062 HSDB ID 5,340
 0.0056
P3073 CosIng number 4,257
 0.0044
P2064 KNApSAcK ID 4,201
 0.0044
P10283 OpenAlex ID 3,465
 0.0033
P7025 HCIS ID 3,091
 0.0032
P4168 IEDB Epitope ID 2,965
 0.0031
P2115 NDF-RT ID 2,864
 0.0030
P267 ATC code 2,834
 0.0029
P1578 Gmelin number 2,828
 0.0029
P2892 UMLS CUI 2,475
 0.0025
P9066 FL number 2,308
 0.0024
P8072 CAB ID 2,097
 0.0021
P657 RTECS number 1,627
 0.0017
P5220 ICSC ID 1,544
 0.0016
P9557 JECFA number 1,543
 0.0016
P1417 Encyclopædia Britannica Online ID 1,456
 0.0013
P5076 Römpp online ID 1,258
 0.0013
P8408 KBpedia ID 1,195
 0.0012
P672 MeSH tree code 1,150
 0.0012
P10245 MedlinePlus drug identifier 1,084
 0.0011

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P235 InChIKey 960,968
 0.7352
P234 InChI 954,260
 0.7303
P8494 DSSTOX compound identifier 740,192
 0.6919
P3117 DSSTox substance ID 740,637
 0.6914
P231 CAS Registry Number 763,536
 0.6702
P661 ChemSpider ID 121,329
 0.1257
P683 ChEBI ID 101,254
 0.1046
P2840 NSC number 97,576
 0.1000
P652 UNII 57,427
 0.0591
P592 ChEMBL ID 49,434
 0.0514
P232 EC number 48,759
 0.0503
P2566 ECHA InfoCard ID 48,620
 0.0502
P3636 PDB ligand ID 21,593
 0.0224
P2063 LIPID MAPS ID 19,806
 0.0205
P1579 Reaxys registry number 18,836
 0.0196
P638 PDB structure ID 18,174
 0.0187
P8691 SwissLipids identifier 17,413
 0.0181
P665 KEGG ID 14,766
 0.0153
P7049 AICS Chemical ID (former scheme) 13,930
 0.0144
P715 DrugBank ID 11,078
 0.0115
P6689 MassBank accession ID 10,822
 0.0113
P6366 Microsoft Academic ID 12,486
 0.0102
P4964 SPLASH 7,718
 0.0080
P595 Guide to Pharmacology Ligand ID 6,989
 0.0073
P3345 RxNorm ID 6,523
 0.0068
P679 ZVG number 6,404
 0.0067
P486 MeSH descriptor ID 6,262
 0.0063
P2057 Human Metabolome Database ID 5,957
 0.0062
P2062 HSDB ID 5,340
 0.0056
P3073 CosIng number 4,257
 0.0044
P2064 KNApSAcK ID 4,201
 0.0044
P10283 OpenAlex ID 3,465
 0.0033
P7025 HCIS ID 3,091
 0.0032
P4168 IEDB Epitope ID 2,965
 0.0031
P2115 NDF-RT ID 2,864
 0.0030
P267 ATC code 2,834
 0.0029
P1578 Gmelin number 2,828
 0.0029
P646 Freebase ID 14,647
 0.0027
P2892 UMLS CUI 2,475
 0.0025
P9066 FL number 2,308
 0.0024
P8072 CAB ID 2,097
 0.0021
P657 RTECS number 1,627
 0.0017
P5220 ICSC ID 1,544
 0.0016
P9557 JECFA number 1,543
 0.0016
P5076 Römpp online ID 1,258
 0.0013
P1417 Encyclopædia Britannica Online ID 1,456
 0.0013
P8408 KBpedia ID 1,195
 0.0012
P672 MeSH tree code 1,150
 0.0012
P10245 MedlinePlus drug identifier 1,084
 0.0011
P2671 Google Knowledge Graph ID 7,830
 0.0009