Helodormin is a VIP-secretin-like peptide isolated from the venom of the Mexican monster lizard (Heloderma suspectum). Helodormin affects a variety of cellular functions by modulating intracellular signaling through activation of adenylate cyclase. Helodormin can be used to study the evolution and function of the secretin and VIP peptide families.

Amylin (8-37), human is a fragment of human Amylin. Amylin (8-37), human has direct vasodilator effects in the isolated mesenteric resistance artery of the rat. Human Amylin is a small hormone secreted by pancreatic β-cells that forms aggregates under insulin deficiency metabolic conditions, and it constitutes a pathological hallmark of type II diabetes mellitus.

PTP Inhibitor I is a cell-permeable, protein tyrosine phosphatase (PTP) inhibitor that covalently blocks the catalytic domain of the Src homology region 2 domain-containing phosphatase (SHP-1(ΔSH2)) with a Ki value of 43 μM and PTP1B with a Ki value of 42 μM.