3843924 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3843924 > 2 > ChemIDplus > XH6396000 > NIOSH/XH6396000 > 2-Oxo-1-pyrrolidine-3,7-dimethylxantine 2-Pyrrolidinone, compd. with theophylline 8-(2-Oxo-1-pyrrolidinyl)theophylline Theophylline, 8-(2-oxo-1-pyrrolidinyl)- XH6396000 > XH6396000 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=XH6396000 $$$$