Epistephamiersine
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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Zhongguo Zhong Yao Za Zhi. 2010 Aug;35(15):1973-7.
Hasubanan type alkaloids in Stephania hernandifolia.[Pubmed:
20931849]
To study the hasubanan type alkaloids in Stephania hernandifolia.
METHODS AND RESULTS:
The dried herbs of S. hernandifolia. were extracted with 95% ethanol. After removal of the solvent, the residue was first partitioned between acid water and petroleum ether, then the aqueous layer was basified and extracted with chloroform to obtain crude alkaloids. Column chromatograghic methods with on silica gel, Rp-18, MCI CHP 20P, Sephadex LH-20 were applied for the isolation and purification of the crude alkaloid fraction. The structures were elucidated by their physicochemical properties and spectral data.
Nine hasubanan type alkaloids were obtained and identified as aknadinine(1), longanone(2), stephasunoline (3), N-methylstephuline(4), Epistephamiersine(5), prostephabyssine(6), aknadilactam(7), dihydroEpistephamiersine(8), hasubanonine(9).
CONCLUSIONS:
Compounds 2-8 were isolated from this plant for the first time.
