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E., Zeskind, J

WADA Category S2 includes some of the most popular substances sold on the unapproved peptide and research chemical marketplace today
[PubMed] [Google Scholar] 90.Sharma A., Kharb S., Chugh S.N., Kakkar R., Singh G.P
Janvier S, Cheyns K, Canfyn M, Goscinny S, Spiegeleer BD, Vanhee C, et al

What differentiates suppliers is the purity at the time of manufacturing (verified via Janoshik testing) and the shipping speed (how much time the peptide spends outside refrigeration)

doi: 10.3390/ph16121699
