Albanin A
Albanin A shows mushroom tyrosinase inhibitory activity, the IC50 value is 463 uM.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Letters in Drug Design & Discovery, 2010 , 7 (8) :602-605.
Melanin Biosynthesis Inhibitors from Wood of Artocarpus heterophyllus: The Effect of Isoprenoid Substituent of Flavone with 4-Substituted Resorcinol Moiety at B Ring[Reference:
WebLink]
In our efforts to find new whitening agent from natural resources, we focused on wood of Artocarpus heterophyllus which shows anti-melanogenesis activity.
METHODS AND RESULTS:
By activity-guided fractionation of A. heterophyllus wood extract, norartocarpetin (1) and artocarpesin (2) were isolated. These compounds have 4-substituted resorcinol moiety in B ring, which is an important substructure for revealing the tyrosinase inhibitory activity. Also, the effect of Albanin A (3) which has 4-substituted resorcinol moiety at B ring with prenyl substituent at C-3 position, was examined for comparison.
CONCLUSIONS:
The IC50 values of mushroom tyrosinase inhibitory activity of norartocarpetin (1), artocarpesin (2) and Albanin A (3) were 1.7, 8.5 and 463 μM, respectively. In melanin formation inhibition on B16 melanoma cells, the IC50 of these compounds (1-3) were 209.1, 45.1 and 40.1 μM, respectively. The roles of each substructure of flavones having 4-substituted resorcinol moiety with or without prenyl substituent on tyrosinase and melanin biosynthesis in B16 melanoma cells were discussed.
