has PubChem normalized counterpart |
http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID449104000 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID237609583 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID140255166 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID245570904 |