Baicalein 491-67-8

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Molecular Weight:

270.24 Baicalein is a CYP2C9 and Prolyl Endopeptidase Inhibitor.

Biological Activity

Baicalein is a CYP2C9 and prolyl endopeptidase inhibitor. It is a flavone, a type of flavonoid, originally isolated from the roots of Scutellaria baicalensis. It is also reported in Oroxylum indicum or Indian trumpetflower. It is the aglycone of baicalin.The flavonoid has been shown to inhibit certain types of lipoxygenases and act as an Anti-Inflammatory Agent. LD50: Mice 3g/kg (i.p.).


Conversion of different model animals based on BSA (Value based on data from FDA Draft Guidelines)

Species	Baboon	Dog	Monkey	Rabbit	Guinea pig	Rat	Hamster	Mouse
Weight (kg)	12	10	3	1.8	0.4	0.15	0.08	0.02
Body Surface Area (m2)	0.6	0.5	0.24	0.15	0.05	0.025	0.02	0.007
Km factor	20	20	12	12	8	6	5	3

Animal A (mg/kg) = Animal B (mg/kg) multiplied by	Animal B Km
	Animal A Km

For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.

Rat dose (mg/kg) = mouse dose (22.4 mg/kg) ×	mouse Km(3)	= 11.2 mg/kg
	rat Km(6)

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