3818804 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3818804 > 2 > ChemIDplus > 172805593 > 10-(2-(Thiophene-2-sulfonamido)ethoxy)-20(R,S)-camptothecin 172805-59-3 > 172805-59-3 > 172805593 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=172805593 $$$$