Bullatine B
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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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Acta Chimica Sinica, 1980(05):475-480.
STUDIES ON THE CHINESE DRUG, ACONITUM SPP Ⅻ. ALKALOIDS FROM XUAN-WU, ACONITUM NAGARUM STAPF VAR. LASIANDRUM W. T. WANG.[Reference:
WebLink]
METHODS AND RESULTS:
Four crystalline alkaloids Xuan-Wu 1, 2, 3 and 4 have been isolated from the root of Aconitum nagarum Stapf var. lasiandrum W. T. Wang (a Chinese folk medicine). Xuan-Wu 1, 2, 3 and 4 are proved to be identical with Bullatine A, Bullatine G, Bullatine B and Bullatine C respectively by comparison of their physical constants, IR, TLC and mixed melting points.
CONCLUSIONS:
Therefore. the molecular formula of Bullatine A ought to be amended to C_(22)H_(33)O_2N and Bullatine G to C_(22)H_(31)O_3N. Furthermore, Xuan-Wu 2 and 3 have been proved to be identical with the known compounds songorine and neoline respectively and the structure of Xuan-Wu 4(i. e. Bullatine C)is proved by chemical and spectral studies to be a new compound, 14-acetylneoline.Nuan-Wu 4 has the formula C_(26)H_(41)O_7N, m. p. 198～202℃, [α]_D~(30)+42.9° (e, 1.5, chloroform). The following crystalline salts and derivative were prepared: the nitrate, m. p. 197～200℃, the perchlorate, m. p. 231～232℃ and the diacetate, m. p. 150～151℃.
