(14)Fmoc-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val- (14) Preparation of Fmoc-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-resin: (13)Fmoc-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-1050530105010603DMF3DMF2DMFFmoc-Glu(otBu)-OHDIEATBTU/HOBtHBTU/HOBtBOP/HOBt105010603DMF3DMF2Fmoc-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val- In the Fmoc-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp(otBu)-Asp(otBu)-Ala-Gly-Leu-Val-resin of step (13), add decapping reagent 10 React at ~50C for 5-30 minutes, drain with a vacuum pump, re-add capping reagent at 10-50C, react for 10-60 minutes, drain, wash with isopropanol for 3 times, DMF for 3 times, and distilled DMF Twice, add the mixture of Fmoc-Glu(otBu)-OH, DIEA, TBTU/HOBt or HBTU/HOBt or BOP/HOBt dissolved in DMF, react at 10-50C for 10-60 minutes, dry with a vacuum pump, and use iso Propanol was washed 3 times, DMF was washed 3 times, the DMF that redistilled was washed 2 times, was sucked dry, obtained Fmoc-Glu(otBu)-Pro-Pro-Pro-Gly-Lys(Boc)-Pro-Ala-Asp( otBu)-Asp(otBu)-Ala-Gly-Leu-Val-resin

The clinical signal is strongest in the recovery space
Thats the difference between a peptide clinic in Orange County that cares about outcomes versus one that just wants to sell you another vial
Both peptides appear frequently in preclinical studies on tissue repair, and both are popular subjects in regenerative medicine research