3813839 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3813839 > 2 > ChemIDplus > 137368491 > 137368-49-1 Human sperm protamine HP4 Protamine 4 (human reduced) Protamine P4 > 137368-49-1 > 137368491 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=137368491 $$$$