Alizarin 72-48-0

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Molecular Weight:

240.21 Alizarin strongly inhibits P450 isoform CYP1A1, CYP1A2 and CYP1B1 with IC50 of 6.2 μM, 10.0 μM and 2.7 μM, respectively; weakly inhibits CYP2A6 and CYP2E1, and does not inhibit CYP2C19, CYP3A4 and CYP3A5.

Biological Activity

Alizarin weakly inhibits CYP2A6 and CYP2E1. Alizarin shows competitive inhibition against CYP1B1 with Ki of 0.5 μM. Alizarin deduces the mutagenicity of MeIQx, which induced by
each CYP1A2 or CYP1B1, while does not effectively reduce the mutation
induced by B[a]P. Alizarin exhibits Antioxidants against
iodophenol-derived phenoxyl radicals, superoxide anion radicals and
lipid peroxidation in rat liver microsomes.


Alizarin also reduces the hepatic content of thiobarbituric
acid-reactive substances and the serum level of alanine aminotransferase
in poisoned animals.


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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Product Categories : Metabolism > P450 Inhibitor