lumisterol

Lumisterol (9β,10α-Ergosterol), a steroid compound, is the (9β,10α)-stereoisomer of Ergosterol. Lumisterol is a photoprotective agent against UVB-induced DNA damage and anti-proliferative activities[1]. [1]. Anyamanee Chaiprasongsuk, et al. Protective Effects of Novel Derivatives of Vitamin D 3 and Lumisterol Against UVB-induced Damage in Human Keratinocytes Involve Activation of Nrf2 and p53 Defense Mechanisms. Redox Biol. 2019 Jun;24:101206.

Lumisterol 3 (>90%; 9β,10α-Cholesta-5,7-dien-3β-ol) is a predominant secosteroid metabolite found in humans, belonging to the class of vitamin D3 photoisomer derivatives. It is utilized in the synthesis of vitamin D.