As of 2022-03-07, the Wikidata property RTECS number (P657) is used on 1,707 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 1,690
 0.0018
P3117 DSSTox substance ID 1,654
 0.0019
P232 EC number 1,649
 0.0297
P2566 ECHA InfoCard ID 1,648
 0.0297
P235 InChIKey 1,630
 0.0012
P662 PubChem CID 1,627
 0.0017
P234 InChI 1,624
 0.0012
P661 ChemSpider ID 1,613
 0.0129
P8494 DSSTOX compound identifier 1,602
 0.0019
P652 UNII 1,585
 0.0232
P646 Freebase ID 1,543
 0.0003
P6366 Microsoft Academic ID 1,496
 0.0055
P7049 AICS Chemical ID (former scheme) 1,351
 0.0805
P679 ZVG number 1,312
 0.1738
P2062 HSDB ID 1,204
 0.1930
P683 ChEBI ID 1,191
 0.0110
P592 ChEMBL ID 1,091
 0.0214
P2840 NSC number 946
 0.0084
P5220 ICSC ID 911
 0.3724
P1579 Reaxys registry number 875
 0.0436
P10283 OpenAlex ID 795
 0.0079
P665 KEGG ID 762
 0.0364
P4964 SPLASH 739
 0.0847
P7025 HCIS ID 716
 0.1530
P6689 MassBank accession ID 669
 0.0557
P486 MeSH descriptor ID 607
 0.0159
P1578 Gmelin number 535
 0.1250
P3345 RxNorm ID 514
 0.0494
P1417 Encyclopædia Britannica Online ID 505
 0.0029
P3073 CosIng number 483
 0.0766
P715 DrugBank ID 425
 0.0315
P227 GND ID 420
 0.0003
P8408 KBpedia ID 404
 0.0102
P2057 Human Metabolome Database ID 400
 0.0535
P3636 PDB ligand ID 389
 0.0166
P695 UN number 360
 0.1945
P5076 Römpp online ID 329
 0.1126
P638 PDB structure ID 325
 0.0116
P1296 Gran Enciclopèdia Catalana ID 291
 0.0025
P3417 Quora topic ID 278
 0.0015
P244 Library of Congress authority ID 275
 0.0002
P7524 CA PROP 65 ID 253
 0.1107
P2115 NDF-RT ID 241
 0.0514
P8072 CAB ID 232
 0.0036
P2892 UMLS CUI 215
 0.0082
P8121 UM-BBD compound ID 202
 0.0829
P2924 Great Russian Encyclopedia Online ID 200
 0.0039
P4342 Store norske leksikon ID 196
 0.0025
P1014 Art & Architecture Thesaurus ID 194
 0.0076
P508 BNCF Thesaurus ID 185
 0.0104

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P5220 ICSC ID 911
 0.3724
P695 UN number 360
 0.1945
P2062 HSDB ID 1,204
 0.1930
P679 ZVG number 1,312
 0.1738
P7025 HCIS ID 716
 0.1530
P1578 Gmelin number 535
 0.1250
P5076 Römpp online ID 329
 0.1126
P7524 CA PROP 65 ID 253
 0.1107
P4964 SPLASH 739
 0.0847
P8121 UM-BBD compound ID 202
 0.0829
P7049 AICS Chemical ID (former scheme) 1,351
 0.0805
P3073 CosIng number 483
 0.0766
P6689 MassBank accession ID 669
 0.0557
P2057 Human Metabolome Database ID 400
 0.0535
P2115 NDF-RT ID 241
 0.0514
P3345 RxNorm ID 514
 0.0494
P628 E number 100
 0.0457
P9066 FL number 172
 0.0437
P1579 Reaxys registry number 875
 0.0436
P8491 AHECC 2017 ID 77
 0.0431
P9557 JECFA number 132
 0.0419
P1820 Open Food Facts food additive ID 74
 0.0374
P2085 Nikkaji ID 83
 0.0373
P665 KEGG ID 762
 0.0364
P4852 JECFA database ID 75
 0.0342
P715 DrugBank ID 425
 0.0315
P2064 KNApSAcK ID 174
 0.0300
P2167 UNSPSC Code 88
 0.0298
P232 EC number 1,649
 0.0297
P2566 ECHA InfoCard ID 1,648
 0.0297
P267 ATC code 155
 0.0294
P4168 IEDB Epitope ID 126
 0.0268
P652 UNII 1,585
 0.0232
P4842 ASHRAE refrigerant number 39
 0.0226
P10077 Spanish Cultural Heritage thesauri ID 79
 0.0226
P2004 NALT ID 181
 0.0223
P592 ChEMBL ID 1,091
 0.0214
P700 Kemler code 31
 0.0180
P3636 PDB ligand ID 389
 0.0166
P486 MeSH descriptor ID 607
 0.0159
P5082 Store medisinske leksikon ID 70
 0.0152
P595 Guide to Pharmacology Ligand ID 134
 0.0150
P9272 DeCS ID 49
 0.0145
P10245 MedlinePlus drug identifier 43
 0.0144
P6694 MeSH concept ID 35
 0.0140
P8061 AGROVOC ID 47
 0.0140
P5930 Open Food Facts ingredient ID 36
 0.0135
P661 ChemSpider ID 1,613
 0.0129
P1051 PSH ID 94
 0.0125
P9635 electronic Essential Medicines List medicine ID 24
 0.0124