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
P31 instance of 55,400
 0.0006
P231 CAS Registry Number 55,346
 0.0588
P232 EC number 55,195
 0.9888
P274 chemical formula 53,523
 0.0511
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
P233 canonical SMILES 44,484
 0.0499
P661 ChemSpider ID 30,323
 0.2024
P2067 mass 29,355
 0.0813
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
P2017 isomeric SMILES 9,295
 0.0229
P646 Freebase ID 9,290
 0.0021
P117 chemical structure 8,990
 0.1436
P6366 Microsoft Academic ID 8,726
 0.0276
P1579 Reaxys registry number 7,126
 0.1054
P2101 melting point 6,972
 0.0874
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
P703 found in taxon 5,114
 0.0019
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
P527 has part or parts 4,210
 0.0058
P2868 subject has role 3,964
 0.0101
P373 Commons category 3,501
 0.0010
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
P279 subclass of 2,180
 0.0008
P2892 UMLS CUI 2,175
 0.0279
P595 Guide to Pharmacology Ligand ID 2,131
 0.0351
P18 image 2,122
 0.0005
P9066 FL number 1,894
 0.0338
P2063 LIPID MAPS ID 1,784
 0.0230

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
P117 chemical structure 8,990
 0.1436
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
P2101 melting point 6,972
 0.0874
P683 ChEBI ID 12,822
 0.0852
P2067 mass 29,355
 0.0813
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
P274 chemical formula 53,523
 0.0511
P7025 HCIS ID 2,875
 0.0511
P662 PubChem CID 48,620
 0.0502
P233 canonical SMILES 44,484
 0.0499
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
P2275 World Health Organisation international non-proprietary name 1,676
 0.0299
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
P4952 safety classification and labelling 1,352
 0.0243
P2064 KNApSAcK ID 1,412
 0.0242
P2175 medical condition treated 1,333
 0.0237
P2063 LIPID MAPS ID 1,784
 0.0230
P8224 molecular model or crystal lattice model 1,284
 0.0230
P2017 isomeric SMILES 9,295
 0.0229
P10283 OpenAlex ID 3,276
 0.0215