7,4'-Dihydroxy-8-methylflavan
7,4'-Dihydroxy-8-methylflavan can significantly promote mesenchymal stem cells (MSCs) osteogenic differentiation by increasing the levels of alkaline phosphatase (ALP) activity.
7,4'-Dihydroxy-8-methylflavan also has free radical scavenging properties.
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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.
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J Pharm Biomed Anal. 2016 Sep 10;129:466-472.
Isolation and chatacterization of homoisoflavonoids from Dracaena cochinchinensis and their osteogenic activities in mouse mesenchymal stem cells.[Pubmed:
27497307 ]
METHODS AND RESULTS:
Two new homoisoflavonoids, dracaeconolide A (1) and dracaeconolide B (2), together with ten known compounds, namely (3R)-7,4'-dihydroxy-8-methoxyhomoisoflavane (3), (3R)-7-hydroxy-3-(4-hydroxybenzyl)chromane (4), (3R)-7,4'-dihydroxy-5-methoxy-homoisoflavane (5), (3R)-6,4'-dihydroxy-8-methoxyhomoisoflavan (6), 7,4'-Dihydroxy-8-methylflavan (7), (2R)-7,4'-dihydroxy-5-methoxy-8-methylflavan (8), 5,4'-dihydroxy-7-methoxy-6-methylflavane (9), 7,4'-dihydroxy-3'-methoxyflavan (10), 7,4'-dihydroxyflavan (11), 4,4'-dihydroxy-2,6-dimethoxydihydrochlcone (12), were isolated from the red resin of Dracaena cochinchinensis (dragon's blood, DB). All the compounds were then evaluated for their effects on mouse bone marrow-derived mesenchymal stem cells (MSCs) proliferation using CCK8 assay and their abilities in promoting MSCs differentiating into osteoblast through the assay of alkaline phosphatase (ALP) activity in vitro.
CONCLUSIONS:
Compounds 2, 3, 4, 7, 9, and 11, at a concentration of 10μM with no cytotoxicity, significantly promoted MSC osteogenic differentiation by increasing the levels of ALP activity to percents of 159.6±5.9, 167.6±10.9, 162.0±1.4, 151.3±4.0, 171.0±8.2, and 169.9±7.3 in relative to the control, respectively. The results of ALP staining were in accordance to that of ALP activity.
Fitoterapia. 2001 Jan;72(1):35-9.
A methylflavan with free radical scavenging properties from Pancratium littorale.[Pubmed:
11163938]
METHODS AND RESULTS:
The isolation of 7,4'-Dihydroxy-8-methylflavan (1) from the dichloromethane extract of Pancratium littorale stem was guided by an assay for free radical scavenging activity towards the 2,2-diphenyl-1-picryl-hydrazyl radical (DPPH).
CONCLUSIONS:
The structure of 1 was established by spectrometric methods including UV, EI mass spectrometry, 1H and 13C-NMR. The free radical scavenging properties of 1 were quantified in solution using spectrophotometry.
