22-Dehydroclerosteryl acetate
Standard reference
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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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Zhong Yao Cai. 2013 Jan;36(1):67-9.
Study on the chemical constituents of Clerodendron philippinum var. simplex.[Pubmed:
23750413]
To study the chemical constituents of Clerodendron philippinum var. simplex.
METHODS AND RESULTS:
The ethanol extract of Clerodendron philippinum var. simplex was isolated and purified by extraction, chromatography on silica gel and recrystallization. The structures of compounds isolated were identified by physicochemical properties and spectral analysis.
Four compounds were isolated and identified as friedelin (1), 25 (27)-dehydroporiferasterol (2), 22-Dehydroclerosteryl acetate (3), uncinatone (4).
CONCLUSIONS:
Compound 2, 3 are isolated form this genus for the first time, Compounds 4 is isolated from this plant for the first time.
Chemical & pharmaceutical bulletin, 1993, 41(11), 2007-2009.
Constituents of Prunus zippeliana Leaves and Branches.[Reference:
WebLink]
METHODS AND RESULTS:
The following substances were identified in the fresh leaves and branches of Prunus zippeliana MIQ. : 22-Dehydroclerosteryl acetate, stigmasteryl acetate, β-sitosterol, stigmasterol, clerosterol, 22-dehydroclerosterol, β-sitosterol and stigmasterol 3-O-β-D-glucopyranoside, ursolic acid, oleanolic acid, 2α-hydroxyursolic acid, tormentic acid, methyl linolate, phytol, prunasin, dl-mandelic acid, kaempferol 3-O-[O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside] and d-mandelic acid β-D-glucopyranoside.
CONCLUSIONS:
Worthy of note is that 24α-ethylsterols (β-sitosterol and stigmasterol) and 24β-ethylsterols (clerosterol and 22-dehydroclerosterol) were obtained together from the leaves of a higher plant.
