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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.
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Two new flavone glycosides from the seeds of Impatiens balsamina L[Pubmed: 21128143
Two new flavone glycosides were isolated from the seeds of Impatiens balsamina L. and their structures were determined as quercetin-3-O-[α-L-rhamnose-(1 → 2)-β-d-glucopyranosyl]-5-O-β-D-glucopyranoside (1), and quercetin-3-O-[(6'''-O-caffeoyl)-α-L-rhamnose-(1 → 2)-β-D-glucopyranosyl]-5-O-β-D-glucopyranoside (2) on the basis of various spectral and chemical studies.
Zhong Yao Cai . 2014 Mar;37(3):428-431.
[Chemical constituents of Trichosanthes kirilowii peels][Pubmed: 25174107
Objective: To study the chemical constituents of the peels of Trichosanthes kirilowii.
Methods: Many chromatographic techniques were used including repeated silica column chromatography, polyamide resin and semi-preparative high performance liquid chromatography. According to the physical and chemical properties and spectral analysis, the chemical structures of the compounds were determined.
Results: Thirteen compounds were isolated and identified as quercetin-3-O-[alpha-L-rhamnose(1 --> 2)-beta-D-glucopyranosyl]-5-O-beta-D-glucopyranoside (1), quercetin-3-O-rutinoside (2), apigenin-7-O-beta-D-glucopyranoside (3), diosmetin-7-O-beta-D-glucopyranoside (4), luteolin (5), apigenin (6), diosmetin (7), methyl palmitate (8), methyl stearate (9), palmitic acid (10), beta-sitosterol (11), alpha-spin-asterol (12) and stigmasterol (13).
Conclusion: Compounds 1 - 3, 5 - 7 are isolated from this plant for the first time.