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Chemical Structure| 491-67-8 Chemical Structure| 491-67-8
Chemical Structure| 491-67-8

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Baicalein is a CYP2C9 and prolyl endopeptidase inhibitor.

Synonyms: 5,6,7-Trihydroxyflavone

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Product Citations

Product Citations

Beata Gąsowska-Bajger ; Hubert Wojtasek ;

Abstract: Baicalein (5,6,7-trihydroxyflavone) has been previously described as an inhibitor of tyrosinase (Guo et al. Int. J. Biol. Macromol. 118 (2018) 57–68). However, long before this article was published this flavonoid had been shown to be a substrate of this enzyme and a catecholic cofactor partially abolishing the lag-phase during oxidation of l-tyrosine. Other compounds with a 1,2,3-triphenol moiety, such as pyrogallol, gallic acid and its esters are also oxidized by tyrosinase. Gallic acid was also shown to reduce tyrosinase-generated o-quinones. We have demonstrated that baicalein is also rapidly oxidized by o-quinones generated from catechols by tyrosinase or by treatment with sodium periodate. Smaller changes of absorbance at 475 nm during oxidation of l-dopa by tyrosinase in the presence of baicalein do not result from enzyme inhibition but from reduction of dopaquinone by baicalein. This reaction prevents formation of dopachrome giving an effect of inhibition, which is only apparent. The actual reaction rates did not decrease but increased in the presence of baicalein, which we demonstrated by measurements of oxygen consumption.

Keywords: Tyrosinase ; Baicalein ; Flavonoid

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Product Details of Baicalein

CAS No. :491-67-8
Formula : C15H10O5
M.W : 270.24
SMILES Code : O=C(C1=C2C=C(O)C(O)=C1O)C=C(O2)C3=CC=CC=C3
Synonyms :
5,6,7-Trihydroxyflavone
MDL No. :MFCD00017459
InChI Key :FXNFHKRTJBSTCS-UHFFFAOYSA-N
Pubchem ID :5281605

Safety of Baicalein

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338
 

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