Pifithrin-alpha (hydrobromide) (Standard) is the analytical standard of Pifithrin-alpha (hydrobromide). This product is intended for research and analytical applications. Pifithrin-alpha hydrobromide is a p53 inhibitor which blocks its transcriptional activity and prevents cells from apoptosis. Pifithrin-alpha hydrobromide is also an aryl hydrocarbon receptor (AhR) agonist.