N-Desmethyl Topotecan Price Not Available 25mg N-Desmethyl Topotecan Supplier Page Catalog Number R010576 Molecular Formula C22H21N3O5 CAS# 190710-79-3 Purity ≥98% Inchi InChI=1S/C22H21N3O5/c1-3-22(29)15-7-17-19-11(9-25(17)20(27)14(15)10-30-21(22)28)6-12-13(8-23-2)18(26)5-4-16(12)24-19/h4-7,23,26,29H,3,8-10H2,1-2H3/t22-/m0/s1 Inchi Key ZWUJOGCYOWLZFL-QFIPXVFZSA-N SMILES CCC1(C2=C(COC1=O)C(=O)N3CC4=C(C3=C2)N=C5C=CC(=C(C5=C4)CNC)O)O Size 25mg Supplier Page https://www.musechem.com/product/R010576.html