Aviptadil (INN) is an analog of vasoactive intestinal polypeptide (VIP) for the treatment of erectile dysfunction.

N-Formyl-Nle-Leu-Phe-Nle-Tyr-Lys TFA (For-Nle-Leu-Phe-Nle-Tyr-Lys-OH TFA) is a formyl peptide receptor (FPR) agonist.The derivative of this peptide is also biologically active as judged by its ability to elicit superoxide anion production by human PMNL at nanomolar concentrations.

1-Methyl-2-(methylthio)imidazole is an impurity of Methimazole, a thiourea antithyroid agent that prevents iodine organification, thus inhibiting the synthesis of thyroxine.