Baicalein is a flavonoid originally isolated from the roots of Scutellaria baicalensis Georgi. Several different functions of baicalein have been reported. Platelet 12-lipoxygenase is inhibited by baicalein with an ID50 value of 0.12 µM, with minimal inhibition of platelet cyclooxygenase-1 (IC50 = 0.83 mM).1 Baicalein inhibits lipid peroxidation, as assessed by production of TBARS, with an IC50 value of 5 µM.2 In addition to these effects, baicalein may play a role in apoptosis, as the compound inhibits cell growth of three human hepatocellular carcinoma cell lines with IC50 values ranging from 17-70 µg/ml.3
1
Sekiya, K., and Okuda, H. Selective inhibition of platelet lipoxygenase by baicalein. Biochem Biophys Res Commun1051090-1095(1982).
2
Gao, D., Sakurai, K., Katoh, M., et al. Inhibition of microsomal lipid peroxidation by baicalein: A possible formation of an iron-baicalein complex. Biochem Mol Biol Int39215-225(1996).
3
Matsuzaki, Y., Korokawa, N., Terai, S., et al. Cell death induced by baicalein in human hepatocellular carcinoma cell lines. Jpn J Cancer Res87170-177(1996).
Formal Name
5,6,7-trihydroxyflavone
CAS Number
491-67-8
Molecular Formula
C15H10O5
Formula Weight
270.2
Formulation
A yellow crystalline solid
Purity
>95%
λmax
216, 277, 324 nm
Stability
1 year
Storage
-20°C
Shipping
Room temperature
in continental US; may vary elsewhere
SMILES
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O=C1CC(Oc2cc(O)c(O)c(O)c12)c1ccccc1
Background Reading
Sekiya, K., and Okuda, H. Selective inhibition of platelet lipoxygenase by baicalein. Biochem Biophys Res Commun1051090-1095(1982).
Gao, D., Sakurai, K., Katoh, M., et al. Inhibition of microsomal lipid peroxidation by baicalein: A possible formation of an iron-baicalein complex. Biochem Mol Biol Int39215-225(1996).
Matsuzaki, Y., Korokawa, N., Terai, S., et al. Cell death induced by baicalein in human hepatocellular carcinoma cell lines. Jpn J Cancer Res87170-177(1996).
Baicalein is available in the following screening
library: