Mofebutazone inhibits the immunological release of prostaglandins as well as leukotrienes.

Neoartanin is a betaine pigment isolated from the fresh root of red beet with antioxidant capacity.

Human proinsulin, the single-chain peptide precursor of insulin, consists of the insulin A and B chains connected by the 31 amino acid C-peptide. Cleavage of proinsulin by proteolytic enzymes produces insulin and free C-peptide.