E

Exendin-4

H-His-Gly-Glu-Gly-Thr-Phe-Thr-Ser-Asp-Leu-Ser-Lys-Gln-Met-Glu-Glu-Glu-Ala-Val-Arg-Leu-Phe-Ile-Glu-Trp-Leu-Lys-Asn-Gly-Gly-Pro-Ser-Ser-Gly-Ala-Pro-Pro-Pro-Ser-NH2
C184H282N50O60S1, M.W.: 4186.03

Met-Enkephalin

H-Tyr-Gly-Gly-Phe-Met-OH
C27H35N5O7S, M.W.: 573.67

Met-Enkephalin, amide

H-Tyr-Gly-Gly-Phe-Met-NH2
C27H36N6O6S1, M.W.: 572.69