|Source:||The roots of Bupleurum chinense|
|Solvent:||DMSO, Pyridine, Methanol, Ethanol, etc.|
|Storage:||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: email@example.com
|After receiving:||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.|
|1 mg||5 mg||10 mg||20 mg||25 mg|
|1 mM||1.0786 mL||5.393 mL||10.7861 mL||21.5722 mL||26.9652 mL|
|5 mM||0.2157 mL||1.0786 mL||2.1572 mL||4.3144 mL||5.393 mL|
|10 mM||0.1079 mL||0.5393 mL||1.0786 mL||2.1572 mL||2.6965 mL|
|50 mM||0.0216 mL||0.1079 mL||0.2157 mL||0.4314 mL||0.5393 mL|
|100 mM||0.0108 mL||0.0539 mL||0.1079 mL||0.2157 mL||0.2697 mL|
Journal of Pharmaceutical Investigation,2008,38(1):57-61.
|Determination of saikosaponin derivatives in Bupleuri Radix using HPLC-ELSD.[Reference: WebLink]|
|A HPLC-ELSD method was developed to determine saikosaponin derivatives from Bupleuri Radix. Eight saikosaponins, saikosaponin c, saikosaponin i, Saikosaponin H, saikosaponin a, saikosaponin b1, saikosaponin g, saikosaponin b2, and saikosaponin d, were analyzed under optimized HPLC conditions [column: Eclipse XDB (i.d., ; mobile phase: with 0.1% COOH (v/v) for solvent A and AcCN with 0.1% COOH (v/v) for solvent B, gradient elution; flow rate: 1mL/min; injection volume: ]. Good linearity was achieved in the range from 62.5 to for each compound, and intra-day precision and accuracy at each concentration level varied between 0.05 and 5.45% and between 93.9 and 109.6%, respectively, whereas those for inter-day variations were between 0.91 to 2.73% and 94.3 to 106.1%. This HPLC-ELSD method was applied for the determination of sakosaponins from Bupleuri Radix samples, and saikosaponin a , c and d were observed as major compounds. The other saikosaponins were shown under limit of quantification level thus couldn't be quantified. The present study suggested that the introduced HPLC-ELSD method is selective and reliable, and not only saikosaponin a, but also saikosaponin c and d should be employed as the standard markers for Bupleuri Radix.|