Phe-Met-Arg-Phe, amide acetate 是一种神经肽，在肽能神经元中激活 K+ 电流，ED50 为 23 nM，这种作用具有剂量依赖性。

Annatto is a natural food coloring derived primarily from Bixa orellana L. Annatto has antitumor activity and at high doses increases the likelihood of cellular mutations.Annatto can be used in beverages, baking, and other foods.

Z-Ala-Ala-OH is a non-polar amino acid that can be used in enzymatic peptide synthesis.