3810925 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3810925 > 2 > ChemIDplus > 121869883 > 121869-88-3 Optec Optec (A2) Optec A 2 Optec B 3 > 121869-88-3 > 121869883 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=121869883 $$$$