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.
China journal of Chinese materia medica, 2018, 43(1):100-108.
Chemical constituents from ethyl acetate-soluble extraction of Valeriana jatamansi.[Pubmed:
29552818]
METHODS AND RESULTS:
Application of a combination of various chromatographic techniques including column chromatography over silica gel,Sephadex LH-20,macroporous adsorbent resin,and reversed-phase HPLC,led to the isolation of 173 compounds including irdidoids,monoterpenes,sesquiterpenes,triterpenes,lignans,flavonoids,and simple aromatic derivatives from the ethyl acetate-soluble fraction of the whole plants of Valeriana jatamansi(Valerianaceae),and their structures were elucidated by spectroscopic methods including 1D,2D NMR UV,IR,and MS techniques.Among them,77 compounds were new.In previous reports,we have described the isolation,structure elucidation,and bioactivities of 68 new and 25 known compounds.
CONCLUSIONS:
As a consequence,we herein reported the isolation and structure elucidation of the remaining 9 new and 71 known compounds,the structure revision of valeriotriate A(8a),as well as cytotoxicity of some compounds.
