Gypenoside XIII
Reference standards.
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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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A Further Investigation on the Chemical Constituents from the Leaves of Panax notoginseng.[Reference:
WebLink]
METHODS AND RESULTS:
Sixteen compounds were isolated from the ethanol extract of the leaves of Panax notoginseng.They were identified as ginsenoside Rh_2(1),F_2(4),Rg_3(5),Rg_1(7),Rd(8),Re(11),Rb_3(13),Rb_1(14),Rc(15);Gypenoside XIII(2),IX(9),XVII(10);notoginsenoside R_1(12),Fa(16);liquiritigenin(3) and liquiritin apioside(6),respectively.
CONCLUSIONS:
It is noticed that compounds 1,2,3 and 6 are isolated from P.notoginsen for the first time,and compounds 1～8 and 10～12 are isolated from the leaves of this plant for the first time. It is also confirmed that the leaves of notoginseng mainly contain protopanaxdiol saponins along with protopanaxtriol saponins and flavonoids of small quantity.
