Selective TRPC5 blocker (IC50 = 13.6 μM). Also displays weak inhibition at TRPC4 (IC50 >100 μM) but not TRPC6. Exhibits no effect against a standard panel of profiling kinases. Blocks TRPC5 channel activity in glomeruli of proteinuric rats. Suppresses severe proteinuria and prevents podocyte loss in a transgenic rat model of focal segmental glomerulosclerosis (FSGS). Purity 98%. MW (observed): 303.36