Taxinine M
Taxinine M is a natural product from Chinese yew Taxus chinensis.
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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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J Pharm Biomed Anal. 2015 Mar 25;107:346-54.
Simultaneous determination of seven taxoids in rat plasma by UPLC-MS/MS and pharmacokinetic study after oral administration of Taxus yunnanensis extracts.[Pubmed:
25645339]
METHODS AND RESULTS:
A rapid, sensitive and reliable method has been developed and validated for the simultaneous determination of seven taxoids including 10-deacetylbaccatin III (10-DAB III), baccatin III, 5-epi-canadensene, Taxinine M, 10-deacetyltaxol (10-DAT), cephalomannine and paclitaxel in rat plasma using docetaxel as the internal standard (IS). The plasma samples were pretreated by liquid-liquid extraction with methyl tert-butyl ether. The chromatographic separation was achieved on a C18 column (50 mm × 2.1 mm, 1.8 μm, Waters, USA) with a gradient elution program consisting of methanol and water (containing 0.1% formic acid) at a flow rate of 0.2 mL/min. Detection was performed under the selected reaction monitoring (SRM) scan using an electrospray ionization (ESI) in the positive ion mode. The mass transitions were as follows: m/z 567.4→444.9 for 10-DAB III, m/z 609.0→549.3 for baccatin III, m/z 617.4→496.9 for 5-epi-canadensene, m/z 709.6→649.3 for Taxinine M, m/z 834.8→307.9 for 10-DAT, m/z 854.5→285.4 for cephalomannine, m/z 876.8→307.3 for paclitaxel and m/z 830.8→549.6 for IS, respectively. All calibration curves exhibited good linearity (r(2)>0.99) over a wide concentration range for all components. The intra-day and inter-day precisions at three different levels were both less than 14.3% in terms of relative standard deviation (RSD) and the accuracies ranged from -8.3% to 14.8% in terms of relative error (RE). The extraction recoveries of the seven compounds ranged from 62.5% to 100.5%.
CONCLUSIONS:
The developed method was successfully applied to the pharmacokinetic study of the seven taxoids in rat plasma after oral administration of the crude extract of the twigs and leaves of Taxus yunnanensis.
Phytochemistry. 1999 Dec;52(8):1565-9.
Taxane diterpenoids from the seeds of Chinese yew Taxus chinensis.[Pubmed:
10647221]
The taxoid chinentaxunine has been isolated from the seeds of Chinese yew Taxus chinensis, and its structure determined on the basis of spectral and chemical methods. In addition, the known taxol C, paclitaxel, 10-deacetyl taxol A, 10-deacetyl-7-epitaxol, 10-deacetyl-10-oxo-7-epi-taxol, Taxinine M, taxchinin A, 10-deacetyl taxinine B and taxuspine X were also isolated and identified from this source.
