3741104 -OEChem-02060822572D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3741104 > 2 > ChemIDplus > 040040628 > 4-Oxo-4H-(1)benzothieno(3,2-b)pyran-2-carboxylic acid 40040-62-8 4H-(1)Benzothieno(3,2-b)pyran-2-carboxylic acid, 4-oxo- > 40040-62-8 > 040040628 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=040040628 $$$$