has PubChem normalized counterpart |
http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID391336853 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID249208927 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID141460216 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID237919436 |