Pterosin Z
Pterosin Z has smooth muscle relaxant activity, is approximately equipotent with that of the related fungal pterosin (EC50 of 2.9 +/- 1.6 x 10(-6) M).
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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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Planta Med. 1999 Apr;65(3):271-2.
Smooth muscle relaxant activity of pterosin Z and related compounds.[Pubmed:
10232079]
METHODS AND RESULTS:
The natural products Pterosin Z, acetylPterosin Z, originally from the fern Pteridium aquilinum, and their isopterosin analogues have been synthesized and their smooth muscle relaxation activity has been measured. All of the test compounds show activity with Pterosin Z being the most active (EC50 = 1.3 +/- 0.1 x 10(-6) M), exhibiting 100 times the activity reported for the related fern metabolites onitin (EC50 = 1 x 10(-4) M), onotisin (EC50 = 2 x 10(-3) M) and otninoside (EC50 = 7 x 10(-4) M). The smooth muscle relaxant activity of Pterosin Z is approximately equipotent with that of the related fungal pterosin (EC50 of 2.9 +/- 1.6 x 10(-6) M).
CONCLUSIONS:
These results suggest that smooth muscle relaxant activity is reduced when a phenol group is present in the pterosin nucleus and when one of the dimethyl groups is derivatized.
