9-cis-β-Carotene, a precursor of retinal, is cleaved by beta-carotene oxygenase 1 (BCMO1) to produce 9-cis-retinal. It inhibits photoreceptor degeneration and restores retinal function in vivo.
9-cis-Vitamin A palmitate (9-cis-Retinyl palmitate) is a 9-cis isomer resulting from the interaction of vitamin A palmitate in corn flakes. It exhibits a biological activity of 26% compared to all-trans-vitamin A palmitate, which is known to be the most biologically active form of vitamin A.
COR167 is a CB2 agonist. It displayed potent immunomodulatory activity on immune cells from healthy subjects and patients with multiple sclerosis. It also showed protective effects on rat brain tissues toward ischemia and reperfusion-induced injury. COR167 has antinociceptive properties.