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Table 1 Summary of depositor-provided cross-references to PubMed articles from PubChem substances and compounds

From: Literature information in PubChem: associations between PubChem records and scientific articles

  Number of cross-references Number of records involved
NSID-PMID NCID-PMID NPMID NSID NCID
All 5,614,567 5,412,256 2,192,601 301,358 261,497
IBM Almaden Research Centera 5,196,617 5,125,878 2,107,354 152,777 147,576
Comparative toxicogenomics databaseb 226,585 111,029 110,000 14,463 7856
NIAID ChemDBc 144,477 133,012 11,951 114,953 104,418
IUPHAR/BPS guide to PHARMACOLOGYd 14,309 11,250 7163 6398 4913
Human metabolome databasee 13,998 13,971 10,414 1788 1781
Immune epitope database (IEDB)f 4849 3863 1747 2067 1948
BioCycg 3318 3267 1386 2989 2939
DrugBankh 3249 3225 3158 1044 1030
Biocatalysis/biodegradation database (BBD)i 2299 2299 644 1343 1342
Bioinformatics and drug design (BIDD) groupj 2270 2262 91 1768 1673
Others 2596 2200 1180 1768 1448
  1. NSID and NCID are the number of PubChem substances and compounds with depositor-provided cross-references to PubMed articles, respectively, and NSID-PMID and NCID-PMID are the number of depositor-provided cross-references from PubChem substance and compound records to PubMed articles, respectively. NPMID is the number of unique PubMed articles associated with the PubChem records via the depositor-provided cross-references
  2. a http://www.research.ibm.com/labs/almaden/index.shtml
  3. bRef. [15]. http://ctdbase.org
  4. c http://chemdb.niaid.nih.gov
  5. dRef. [16]. http://www.guidetopharmacology.org
  6. eRef. [17]. http://www.hmdb.ca
  7. fRef. [18]. http://www.iedb.org
  8. gRef. [19]. http://biocyc.org
  9. hRef. [20]. http://www.drugbank.ca
  10. iRef. [21]. http://eawag-bbd.ethz.ch
  11. j http://bidd.nus.edu.sg