Des-Leu10-angiotensin I is a nonapeptide that inhibits rabbit lung angiotensin-converting enzyme peptidyl-dipeptide hydrolase with a Ki value of 31 μM, which is generated from angiotensin I by the action of carboxypeptidase-like activities residing in the human platelet and mast cell.

[Sar1, Ile8]-Angiotensin II (TFA) is a peptide that has multiple effects on vascular smooth muscle, including contraction of normal arteries and hypertrophy or hyperplasia of cultured cells or diseased vessels.

B I09, an IRE-1 RNase inhibitor with an IC50 of 1230 nM, inhibits splicing of XBP1 mRNA in human WaC3 cells and expression of xbp-1 in LPS-stimulated B cells. B I09 can be used to simulate the defects of XBP-1 in CLL cells.