where do melanotan injections come from Changes in Oral Mucosa Associated with II Injections: A Case Report You Should Avoid Using Nasal
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Its low reactivity is due to the ability of the unpaired electron to resonate between carbons 1 and 3 (May, 1999) without interacting with O2 (Bielski and Richter, 1975)
Storing at 10C instead of 28C accelerates degradation you can't see

At low concentrations, sodium lowers the K m of OCTN2 toward carnitine [99], suggesting binding to a site close to the carnitine binding site, while higher sodium concentrations provide the electrochemical gradient to transfer the carnitine-sodium complex inside the cell [99]

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Dev Dyn 240:501520 Steinbaugh MJ, Narasimhan SD, Robida-Stubbs S, Moronetti Mazzeo LE, Dreyfuss JM, Hourihan JM, Raghavan P, Operana TN, Esmaillie R, Blackwell TK, 2015

Assists in supporting metabolic functions