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This process not only has the advantages of selective acylation of the glutathione thiol group without involving the free amino but also highlights recycling of the relatively costly solvent TFA, which improves the yield to 91% and quality to 99.7%
And in fact, if they didnt, theres two or three of them
In the standard 80mg presentation the split is GHK-Cu 50mg, KPV 10mg, BPC-157 10mg, and TB-500 10mg
doi: 10.1016/s0090-6980(00)00099-x 91 ZhangYZhangCShuJGuoJChangH-MLeungPCKet al
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