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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: firstname.lastname@example.org
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.
Free Radic Biol Med.2016, 97:307-319
International. J. of Food Properties 2017, 20:S131-S140
Arch Pharm Res.2015, 38(6):1080-9
Semyung University2017, 149407
BMC Plant Biol.2018, 18(1):122
Journal of Third Military Medical University2019, 41(2):110-115
Food Res Int.2019, 123:125-134
Phytother Res.2018, 32(12):2551-2559
J Asian Nat Prod Res. 2005 Apr;7(2):131-7.
Stilbene derivatives from Gnetum cleistostachyum.[Pubmed: 15621615
METHODS AND RESULTS:
Three new stilbene derivatives, named gnetucleistol A (1), Gnetucleistol B (2) and C (3), together with four known compounds, gnetifolin A (4), p-hydroxycinnamic acid (5), piceatannol (6) and resveratrol (7), were isolated from Gnetum cleistostachyum C.Y. Cheng (Gnetaceae). Their structures were elucidated on the basis of spectroscopic evidence (EI-MS, UV, IR, NOE, 1H, 13C and 2D NMR).