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Last Updated: April 4, 2026 | Reading Time: Approximately 8 minutes | Author: Palmetto Peptides Research Team Quick Answer When researchers move beyond native IGF-1 and begin evaluating synthetic analogs for preclinical work, two peptides come up consistently: IGF-1 LR3 and IGF-1 DES

The Glutathione S -transferase (GST) family of enzymes is a group of typical Phase II detoxification enzymes and is found in many prokaryotes and eukaryotes

The reactive thiol (SH) group on its cysteine residue carries its antioxidant activity

Also, there is subtle change in the polarizability of the molecules (~ 139 a.u.)

The short answer is: very rarely, and to a dramatically lesser extent than other GHRPs