Semaglutide Impurity 123

EGTFTSDVSSYLEGQAAKEFIAWLVRG; Glu-Gly-Thr-Phe-Thr-Ser-Asp-Val-Ser-Ser-Tyr-Leu-Glu-Gly-Gln-Ala-Ala-Lys-Glu-Phe-Ile-Ala-Trp-Leu-Val-Arg-Gly; (5S,8S,11S,14S,17S,20S,23S,26S,29S,32S,35S,38S,44S,47S,50S,53S,56S,59S,62S,65S,68S,71S,74S,80S) -14- ((1H-indol-3-yl) methyl) -80-amino-38- (3-amino-3-oxopropyl) -29- (4-aminobutyl) -23,71-dibenzyl-20- ((S) -sec-butyl) -26,44-bis (2-carboxyethyl) -62- (carboxymethyl) -5- (3-guanidinopropyl) -50- (4-hydroxybenzyl) -68,74-bis ((R) -1-hydroxyethyl) -53,56,65-tris (hydroxymethyl) -11,47-diisobutyl-8,59-diisopropyl-17,32,35-trimethyl-4,7,10,13,16,19,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76,79-hexacosaoxo-3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78-hexacosaazatrioctacontanedioic acid