3815099 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3815099 > 2 > ChemIDplus > 144190410 > 144190-41-0 2H-Thieno(3,2-g)(1)benzopyran-2-one 7H-Selenopyrano(3,2-f)(1)benzofuran-7-one > 144190-41-0 > 144190410 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=144190410 $$$$