3845680 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3845680 > 2 > ChemIDplus > YX3979900 > NIOSH/YX3979900 > Crotalus helleri venom Venom, snake, Crotalus helleri YX3979900 > YX3979900 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=YX3979900 $$$$