Certificates of analysis from independent laboratories confirm peptide identity and purity levels, typically targeting greater than 98% purity for research-grade materials
In particular, some amino acids are deaminated to keto acids that can be converted to several alcohols such as ethanol, 1-propanol, n-butanol, iso-butanol, 2-methyl -1-butanol and 3-methyl-1-butanol
doi: 10.1038/nature21370 120 JinH.XuM.ChenH.ZhangS.HanX.TangZ.et al
Molecular Composition and Mechanistic Profile Melanotan II (MT2): A synthetic cyclic heptapeptide derived from the MSH sequence and optimized for enhanced receptor affinity and in vivo stability
While some people respond to taking a very small dose called super responders others cannot tolerate moving up to the next higher standard dose and need something in between. This helps explain why one recent study among patients with diabetes found that microdosing helped them stick with their GLP-1s, reducing side effects without compromising efficacy