A certificate should provide the complete sequence and chemical form rather than relying solely on a trade-style name
R 3 is C 2 -C 6 alkyl, C 2 -C 6 alkenyl, C 1 -C 4 haloalkyl, optionally substituted C 3 -C 6 cycloalkyl, optionally substituted C 2 -C 7 heterocycloalkyl, optionally substituted C 6 -C 10 aryl, OR 6 , NR 5 R 6 , C(O)R 7 , CO 2 R 6 , C(O)NR 5 R 6 , N(R 5 )C(O)R 7 , N(R 5 )CO 2 R 7 , NHS(O) 2 R 7 , S(O) 2 NR 5 R 6 , or R 2 and R 3 together form an optionally substituted C 2 -C 7 heterocycloalkyl ring
Relative contraindications requiring caution include active or suspected cancer (GHK-Cu promotes angiogenesis with concern about theoretically feeding tumors, though conflicting data shows documented anti-cancer gene expression effects requiring medical supervision), severe organ dysfunction (kidney or liver failure may slow peptide clearance), hemochromatosis or copper overload conditions, autoimmune disorders, and patients on immunosuppressants or blood thinners
Ferrari is a major stakeholder