3845921 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3845921 > 2 > ChemIDplus > YX4003200 > NIOSH/YX4003200 > Latrodectus mactans venom Venom, spider, Latrodectus mactans YX4003200 > YX4003200 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=YX4003200 $$$$