4β-Hydroxywithanolide E is a withanolide steroidal lactone that has anti-inflammatory and anticancer activities. It inhibits LPS-induced nitric oxide (NO) production and TNF-α-induced NF-κB activity. 4β-Hydroxywithanolide E inhibits LPS-induced increases in inducible nitric oxide synthase (iNOS) and COX-2 levels and Akt and STAT1 phosphorylation. It inhibits Wnt signaling in HCT116 and SW480 colorectal cancer cells (IC50s = 1.85 and 2.67 μM, respectively).3 4β-Hydroxywithanolide E inhibits the proliferation of HCT116, SW480, HT-29, and LoVo cells.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.