The Molecular formula of  Topotecan HCl (119413-54-6): C₂₃H₂₄ClN₃O₅
The Molecular Weight of  Topotecan HCl (119413-54-6): 457.91
Molecular Structure : 
Melting point:  213-218 °C 
Index of Refraction: 1.733
Surface Tension: 82.8 dyne/cm
Density: 1.49 g/cm³
Flash Point: 427.3 °C
Enthalpy of Vaporization: 119.49 kJ/mol
Boiling Point: 782.9 °C at 760 mmHg
Vapour Pressure: 8.13E-26 mmHg at 25 °C 
Appearance of Topotecan HCl (119413-54-6): White Crystalline Solid

 

 Topotecan HCl (119413-54-6) is naturally occurring amino acid.It is the precursor of tetrapyrroles in the biosynthesis of chlorophyll and heme.And it is antineoplastic (photosensitizer),especially a DNA topoisomerase I inhibitor,just like semisynthetic analog of Camptothecin.

The Hazard Codes of  Topotecan HCl (119413-54-6) :  T
The Risk Statements information of  Topotecan HCl (119413-54-6): 25-36/37/38-46
25:  Toxic if swallowed 
46:  May cause heritable genetic damage
36/37/38:  Irritating to eyes, respiratory system and skin
The Safety Statements information of  Topotecan HCl (119413-54-6): 26-36/37/39-45
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice    
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
36/37/39:  Wear suitable protective clothing, gloves and eye/face protection 

 Topotecan HCl (119413-54-6),also called topotecan monohydrochloride;topetecan hydrochloride;5-piperazin-1-yl-benzofuran-2-carboxylic acid ethyl ester,is white crystalline solid.