3786729 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3786729 > 2 > ChemIDplus > 091043639 > 2-Pyrrolidinone, 1,1'-(1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-7,16-diylbis(methylene))bis- 91043-63-9 BRN 4599729 N,N'-Bis-pyrrolidonomethyl-diaza-18-crown-6 > 91043-63-9 > 091043639 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=091043639 $$$$