Kaempferol-7-O-D-glucopyranoside
Kaempferol 7-O-beta-d-glucopyranoside, a novel supercoolant could be used to sub-zero non-freezing rat heart preservation.
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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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Chem Cent J . 2018 Dec 3;12(1):126.
Coagulatory active constituents of Malus pumila Mill. flowers[Pubmed:
30506434]
Abstract
Background: The flowers of Malus pumila Mill (Rosaceae) is rich in resources, but lack of medicinal value research. Chemical constituents of the same family M. pumila have coagulatory activity. Considering the coagulatory activity could be beneficial for various cardiovascular diseases, the aim of this study is to evaluate coagulatory active constituents of M. pumila flowers.
Methods: Chemical constituents of M. pumila flowers were isolated by various column chromatographies, and their coagulatory activity were evaluated by activated partial thromboplastin time (APTT), prothrombin time (PT), thrombin time (TT) and fibrinogen (FIB) in vitro.
Results: Nine compounds were isolated from M. pumila flowers, and identified as kaempferol-3-O-β-D-glucopyranoside (1), kaempferol-7-O-β-D-glucopyranoside (2), kaempferol-3-O-α-L-arabinofuranoside (3), phloridzin (4), kaempferol (5), phloretin (6), β-sitosterol (7), lupeol (8) and pyracanthoside (9). Compounds 1-9 were isolated from the flowers for the first time, compounds 1, 2 and 9 were isolated from the genus for the first time. Compound 2 could significantly shorten APTT, TT and PT, but significantly decrease the content of FIB. Compound 3 could shorten PT. Compound 4 could significantly shorten TT and PT, but significantly decrease the content of FIB. Compound 5 shortened APTT. Compound 6 and 7 could significantly shorten APTT and PT. Compound 9 was able to prolong TT and decrease the content of FIB, but shorten PT.
Conclusions: Compounds 2-7 possessed significant procoagulant activity in vitro, compound 9 had anticoagulant activity in vitro, which showed coagulation potential of compounds from M. pumila flowers, as a new source of bioactive molecules for therapeutic purposes.
Keywords: Chemical constituents; Coagulatory activity; Malus pumila Mill.
Transplantation, 2010, 90:444.
Successful introduction of novel supercoolant, kaempferol 7-O-beta-d-glucopyranoside (KF7G), to sub-zero non-freezing rat heart preservation.[Reference:
WebLink]
Successful introduction of novel supercoolant, kaempferol 7-O-beta-d-glucopyranoside (Kaempferol-7-O-D-glucopyranoside,KF7G), to sub-zero non-freezing rat heart preservation.
