has PubChem normalized counterpart |
http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID237919583 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID391336559 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID141460520 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID243736423 |