l  General Information  | 
Product Name  | Topotecan HCl  | 
General description  | Topotecan HCl is a topoisomerase I inhibitor for MCF-7 Luc cells and DU-145 Luc cells with IC50 of 13 nM and 2 nM in cell free assays, respectively.  | 
Synonym  | NSC609699, Nogitecan HCl, SKFS 104864A  | 
Purity  | ≥99.0%(HPLC)  | CAS Number  | 119413-54-6  | 
Formula  | C23H23N3O5·HCl  | Molecular Weight  | 457.91  | 
Suitability  | BioReagent, suitable for cell culture, etc.  | 
l  Physical and Chemical Information  | 
Appearance  | Solid  | 
Solubility(25℃)  | DMSO  | ≥50mg/mL  | 
Ethanol  | Insoluble  | 
Water  | ≥50mg/mL  | 
l  Biological Information  | 
Biochem/Physiol
  Actions  | Topotecan Hydrochloride is the hydrochloride salt of a semisynthetic derivative of camptothecin with antineoplastic activity. During the S phase of the cell cycle, topotecan selectively stabilizes topoisomerase I-DNA covalent complexes, inhibiting religation of topoisomerase I-mediated single-strand DNA breaks and producing potentially lethal double-strand DNA breaks when complexes are encountered by the DNA replication machinery. Camptothecin is a cytotoxic quinoline-based alkaloid extracted from the Asian tree Camptotheca acuminata. Topotecan HCl is a topoisomerase I inhibitor for MCF-7 Luc cells and DU-145 Luc cells with IC50 of 13 nM and 2 nM in cell-free assays, respectively.  | 
l  Storage  | 
Storage temp.  | -20℃  | 
l  Precautions and Disclaimer  | 
This product is for R&D use only, not for drug, household, or other uses.  | 
l  References  | 
1.    http://www.drugbank.ca 2.    https://ncit.nci.nih.gov 3.    https://www.ncbi.nlm.nih.gov  |