3737450 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3737450 > 2 > ChemIDplus > 028696302 > 28696-30-2 Butanoic acid, 2-amino-4-((aminoiminomethyl)amino)-, ethyl ester, (S)- L-alpha-Amino-gamma-guanidinobutyrate > 28696-30-2 > 028696302 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=028696302 $$$$