Stearoyl Serotonin

Stearoyl serotonin is a hybrid molecule patterned after arachidonoyl serotonin. Arachidonoyl serotonin is a dual antagonist of fatty acid amide hydrolase (FAAH) and the transient receptor potential vanilloid-type 1 (TRPV1) channel, reducing both acute and chronic peripheral pain. The effects of replacing the arachidonoyl portion with the saturated 18-carbon stearoyl moiety have not been studied. However, replacement of arachidonate with saturated 11- or 12-carbon fatty acids produces compounds that potently inhibit capsaicin-induced TRPV1 channel activation (IC50=0.76 μM) without blocking FAAH-mediated hydrolysis of arachidonoyl ethanolamine (IC50 > 50 μM) .