3735540 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3735540 > 2 > ChemIDplus > 021561977 > 21561-97-7 4-Imidazolidinebutanoic acid, 5-methyl-2-oxo- (VAN) Bisnordethiobiotin > 21561-97-7 > 021561977 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=021561977 $$$$