Viscidulin III
Viscidulin III (17.4 microM), wogonin (17.4 microM) and luteolin (18.4 microM) were more effective than baicalein (23.0 microM) which reportedly inhibits the proliferation of some cancer cell lines.
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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.
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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.
University of Limpopo2016, 1777
Curr Issues Mol Biol.2023, ;45(2):1601-1612.
Heliyon.2023, 9(6):e16138.
BioRxiv-The Preprint server for biology2023, 586957.
Int J Mol Sci.2022, 23(21):13112.
Allergol Immunopathol (Madr).2022, 1;50(4):23-30.
Chemistry of Natural Compounds2020, 56,423-426
Pharm Biol.2021, 59(1):134-145.
Biomolecules.2020, 10(2):E184
Agriculture2022, 12(12), 2173.
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Beijing Da Xue Xue Bao. 2009 Oct 18;41(5):578-84.
Flavonoids from Scutellaria baicalensis and their bioactivities.[Pubmed:
19829679]
To study the flavonoids of Scutellaria baicalensis and their bioactivities.
METHODS AND RESULTS:
Chromatographic methods were used to separate compounds, spectral methods were used to determine the structures and bioactivities of the flavonoids were screened in several models in vitro.
Nine compounds were isolated and identified as baicalein (1), wogonin (2), oroxylin A (3), 5, 7, 2', 6'-tetrahydroxyflavone (4), Viscidulin III (5), baicalin (6), wogonoside (7), oroxylin A-7-O-beta-D-glucuronide (8) and chrysin-6-C-alpha-L-arabinopyranosyl-8-C-beta-D-glucopyranoside (9).
CONCLUSIONS:
Baicalein had good anti-bacteria activity, and some compounds showed inhibiting activity against IL-1beta converting enzyme. The 13C NMR data of compounds 9 were assigned correctly by 2D nuclear magnetic resonance (NMR).
J Ethnopharmacol. 2004 Mar;91(1):65-8.
Cytotoxic activities of flavonoids from two Scutellaria plants in Chinese medicine.[Pubmed:
15036470]
The effects of 17 flavonoids, isolated from two flavonoid-rich Scutellaria species (Scutellaria baicalensis Georgi and Scutellaria rivularis Wall) used in traditional Chinese medicine, on HL-60 cells were assessed by WST-8.
METHODS AND RESULTS:
Ten of the flavonoids inhibited the proliferation of HL-60, as shown by IC50 values used as indexes of the inhibition. 2',3',5,7-tetrahydroxy flavone (IC50=9.5 microM), apigenin (15.0 microM), Viscidulin III (17.4 microM), wogonin (17.4 microM) and luteolin (18.4 microM) were more effective than baicalein (23.0 microM) which reportedly inhibits the proliferation of some cancer cell lines. Others were less effective, and oroxylin A stimulated the proliferation. Scutellaria rivularis, used for the treatment of tumors in the clinic, contained flavonoids that were more inhibitive than those in Scutellaria baicalensis.
CONCLUSIONS:
These results are demonstrative of some reasons for the use of Scutellaria rivularis as a crude antitumor drug.
Planta Med. 1997 Dec;63(6):536-9.
Studies on the constituents of roots of Scutellaria planipes.[Pubmed:
17252377]
From the roots of Scutellaria planipes (L.), three new flavonoids, 5,7,3',6'-tetrahydroxy-6,8,2'-trimethoxyflavone, (2 R,3 R)-3,5,7,2',5'-pentahydroxyflavanone and 7,2'-dihydroxy-5-methoxyflavone were isolated, together with ten known flavonoids, skullcapflavone I, wogonin, baicalein, norwogonin, Viscidulin III, 5,7,2',6'-tetrahydroxy-flavone, 3,5,7,2',6'-pentahydroxyflavone, wogonin 7- O-beta- D-glucuronide, baicalin, baicalein 7- O-beta- D-glucopyranoside, and three phenethyl alcohol glycosides, acteoside, martynoside, and jionoside D. The structures were elucidated by spectroscopic methods.
