5α-hydroxy-6-keto Cholesterol (CAS 13027-33-3)
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Cholesterol is the most abundant neutral lipid present in the surfactant of the lung epithelial lining fluid with the double bond between carbons 5 and 6 of cholesterol susceptible to attack by ozone. 5α-hydroxy-6-keto Cholesterol (6-oxo-3,5,-diol) is a major metabolite of cholesterol formed during exposure of lung epithelial cells to ozone, with formation of 5β,6β-epoxycholesterol as a predominant precursor.1 Exposure of C57BL/6J mice to 0.5-3 ppm ozone produced a dose-dependent formation of 6-oxo-3,5,-diol which was detectable in the bronchalveolar lavage fluid, lavaged cells, and lung homogenates.2 6-Oxo-3,5-diol is a potent inhibitor of cholesterol synthesis in human bronchial epithelial cells with an IC50 of 350 nM and exhibits significant cytotoxicity in the low µM range.1
5α-hydroxy-6-keto Cholesterol (CAS 13027-33-3) References
1 Pulfer, M.K., Murphy, R.C. Formation of biologically active oxysterols during ozonolysis of cholesterol present in lung surfactant. J Biol Chem 279(25) 26331-26338 (2004). 2 Pulfer, M.K., Taube, C., Gelfand, E., et al. Ozone exposure in vivo and formation of biologically active oxysterols in the lung. J Pharmacol Exp Ther 312(1) 256-264 (2005).Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
5α-hydroxy-6-keto Cholesterol, 1 mg | sc-205154 | 1 mg | $34.00 | |||
5α-hydroxy-6-keto Cholesterol, 10 mg | sc-205154A | 10 mg | $272.00 |