| Description | 4-oxo-27-TBDMS Withaferin A is a derivative of the steroidal lactone withaferin A that has anticancer activity.1 It is cytotoxic to A2780 ovarian cancer cells (IC50 = 17 μM) but not to carboplatin-resistant A2780 (A2780/CP70) cells (IC50 = >100 μM). It is selective for A2780 cells over non-cancerous ARPE19 cells (IC50 = 1,660 μM). 4-oxo-27-TBDMS Withaferin A induces DNA fragmentation in A2780 cells. |
| molecular weight | 582.853 |
| Molecular formula | C34H50O6Si |
| CAS | 1214886-31-3 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |
| Solubility | DMSO: 5 mg/mL DMSO:PBS (pH 7.2) (1:1): 0.5 mg/mL DMF: 5 mg/mL |
| References | 1. Perestelo, N.R., Llanos, G.G., Reyes, C.P., et al. Expanding the chemical space of withaferin A by incorporating silicon to improve its clinical potential on human ovarian carcinoma cells. J. Med. Chem. 62(9), 4571-4585 (2019). |