3742389 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > <PUBCHEM_SUBSTANCE_ID> 3742389 > <PUBCHEM_SUBSTANCE_VERSION> 2 > <PUBCHEM_EXT_DATASOURCE_NAME> ChemIDplus > <PUBCHEM_EXT_DATASOURCE_REGID> 050645802 > <PUBCHEM_SUBSTANCE_SYNONYM> 50645-80-2 Des(tetrapeptide)(B1-B4)-insulin Insulin, 1B-de-L-phenylalanine-2B-de-L-valine-3B-de-L-asparagine-4B-de-L-glutamine- Insulin, des(tetrapeptide)(B1-B4)- > <PUBCHEM_GENERIC_REGISTRY_NAME> 50645-80-2 > <PUBCHEM_XREF_EXT_ID> 050645802 > <PUBCHEM_EXT_DATASOURCE_URL> http://chem.sis.nlm.nih.gov/chemidplus/ > <PUBCHEM_EXT_SUBSTANCE_URL> http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=050645802 $$$$