As of 2022-03-07, the Wikidata property ECHA InfoCard ID (P2566) is used on 55,491 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
P231 CAS Registry Number 55,346
 0.0588
P232 EC number 55,195
 0.9888
P235 InChIKey 50,612
 0.0386
P234 InChI 50,438
 0.0387
P662 PubChem CID 48,620
 0.0502
P3117 DSSTox substance ID 48,304
 0.0563
P8494 DSSTOX compound identifier 46,833
 0.0546
P661 ChemSpider ID 30,323
 0.2024
P652 UNII 26,834
 0.2769
P2840 NSC number 16,098
 0.1066
P592 ChEMBL ID 14,376
 0.1573
P7049 AICS Chemical ID (former scheme) 13,628
 0.2338
P683 ChEBI ID 12,822
 0.0852
P646 Freebase ID 9,290
 0.0021
P6366 Microsoft Academic ID 8,726
 0.0276
P1579 Reaxys registry number 7,126
 0.1054
P665 KEGG ID 6,905
 0.1007
P679 ZVG number 6,682
 0.1194
P4964 SPLASH 5,884
 0.1026
P6689 MassBank accession ID 5,554
 0.0912
P3345 RxNorm ID 5,399
 0.0910
P2062 HSDB ID 5,250
 0.0938
P715 DrugBank ID 4,939
 0.0787
P2671 Google Knowledge Graph ID 4,803
 0.0006
P486 MeSH descriptor ID 4,540
 0.0516
P3073 CosIng number 4,236
 0.0752
P3636 PDB ligand ID 3,323
 0.0447
P10283 OpenAlex ID 3,276
 0.0215
P7025 HCIS ID 2,875
 0.0511
P2057 Human Metabolome Database ID 2,598
 0.0440
P2115 NDF-RT ID 2,517
 0.0448
P638 PDB structure ID 2,465
 0.0309
P267 ATC code 2,326
 0.0409
P2892 UMLS CUI 2,175
 0.0279
P595 Guide to Pharmacology Ligand ID 2,131
 0.0351
P9066 FL number 1,894
 0.0338
P2063 LIPID MAPS ID 1,784
 0.0230
P8072 CAB ID 1,727
 0.0149
P1578 Gmelin number 1,726
 0.0303
P657 RTECS number 1,648
 0.0297
P5220 ICSC ID 1,607
 0.0289
P1417 Encyclopædia Britannica Online ID 1,483
 0.0066
P2064 KNApSAcK ID 1,412
 0.0242
P9557 JECFA number 1,411
 0.0254
P5076 Römpp online ID 1,188
 0.0213
P8408 KBpedia ID 1,113
 0.0120
P672 MeSH tree code 1,093
 0.0154
P3417 Quora topic ID 929
 0.0039
P4168 IEDB Epitope ID 910
 0.0158
P10245 MedlinePlus drug identifier 865
 0.0155

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P232 EC number 55,195
 0.9888
P652 UNII 26,834
 0.2769
P7049 AICS Chemical ID (former scheme) 13,628
 0.2338
P661 ChemSpider ID 30,323
 0.2024
P592 ChEMBL ID 14,376
 0.1573
P679 ZVG number 6,682
 0.1194
P2840 NSC number 16,098
 0.1066
P1579 Reaxys registry number 7,126
 0.1054
P4964 SPLASH 5,884
 0.1026
P665 KEGG ID 6,905
 0.1007
P2062 HSDB ID 5,250
 0.0938
P6689 MassBank accession ID 5,554
 0.0912
P3345 RxNorm ID 5,399
 0.0910
P683 ChEBI ID 12,822
 0.0852
P715 DrugBank ID 4,939
 0.0787
P3073 CosIng number 4,236
 0.0752
P231 CAS Registry Number 55,346
 0.0588
P3117 DSSTox substance ID 48,304
 0.0563
P8494 DSSTOX compound identifier 46,833
 0.0546
P486 MeSH descriptor ID 4,540
 0.0516
P7025 HCIS ID 2,875
 0.0511
P662 PubChem CID 48,620
 0.0502
P2115 NDF-RT ID 2,517
 0.0448
P3636 PDB ligand ID 3,323
 0.0447
P2057 Human Metabolome Database ID 2,598
 0.0440
P267 ATC code 2,326
 0.0409
P234 InChI 50,438
 0.0387
P235 InChIKey 50,612
 0.0386
P595 Guide to Pharmacology Ligand ID 2,131
 0.0351
P9066 FL number 1,894
 0.0338
P638 PDB structure ID 2,465
 0.0309
P1578 Gmelin number 1,726
 0.0303
P657 RTECS number 1,648
 0.0297
P5220 ICSC ID 1,607
 0.0289
P2892 UMLS CUI 2,175
 0.0279
P6366 Microsoft Academic ID 8,726
 0.0276
P9557 JECFA number 1,411
 0.0254
P2064 KNApSAcK ID 1,412
 0.0242
P2063 LIPID MAPS ID 1,784
 0.0230
P10283 OpenAlex ID 3,276
 0.0215
P5076 Römpp online ID 1,188
 0.0213
P4168 IEDB Epitope ID 910
 0.0158
P10245 MedlinePlus drug identifier 865
 0.0155
P672 MeSH tree code 1,093
 0.0154
P8072 CAB ID 1,727
 0.0149
P7524 CA PROP 65 ID 765
 0.0138
P8408 KBpedia ID 1,113
 0.0120
P8121 UM-BBD compound ID 651
 0.0117
P6694 MeSH concept ID 540
 0.0097
P4852 JECFA database ID 520
 0.0094