|Source:||The roots of Picrorhiza scrophulariiflora|
|Biological Activity or Inhibitors:||1. Picrosides exhibit significant learning and memory deficits, just as Alzheimer's disease(AD) in human.
|Solvent:||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||1.857 mL||9.2851 mL||18.5701 mL||37.1402 mL||46.4253 mL|
|5 mM||0.3714 mL||1.857 mL||3.714 mL||7.428 mL||9.2851 mL|
|10 mM||0.1857 mL||0.9285 mL||1.857 mL||3.714 mL||4.6425 mL|
|50 mM||0.0371 mL||0.1857 mL||0.3714 mL||0.7428 mL||0.9285 mL|
|100 mM||0.0186 mL||0.0929 mL||0.1857 mL||0.3714 mL||0.4643 mL|
J Sep Sci. 2011 Aug;34(15):1910-6.
|Counter-current chromatographic method for preparative scale isolation of picrosides from traditional Chinese medicine Picrorhiza scrophulariiflora.[Pubmed: 21721121]|
|Apocynin, androsin, together with picroside I, picrosideII and Picroside III from crude extracts of Picrorhiza scrophulariiflora were isolated by means of high-speed counter-current chromatography (CCC) combining elution-extrusion (EE) and cycling-elution (CE) approach. The EECCC took full advantages of the liquid nature of the stationary phase for a complete sample recovery and extended the solute hydrophobicity window, while CECCC showed its unique advantage in achieving effective separation of special compounds through preventing stationary phase loss. In the present work, the biphasic liquid system composed of n-hexane/ethyl acetate/methanol/water (1:2:1:2, v/v/v/v) was used for separation of apocynin and androsin, ethyl acetate/n-butanol/water/formic acid (4:1:5:0.005, v/v/v/v) for picroside I,picroside II and Picroside III.|
J Pharm Biomed Anal. 2013 Jun;80:136-40.
|Pipette tip solid-phase extraction and ultra-performance liquid chromatography/mass spectrometry based rapid analysis of picrosides from Picrorhiza scrophulariiflora.[Pubmed: 23567266]|
|Pipette tip solid-phase extraction (PT-SPE) is a technique popular in sample preparation of biological fluids and protein hydrolysates. In this study, we developed a microtechnic using a pipette tip packed with C18 as sorbent for extraction and purification of bioactive compounds, picroside-I,picroside II and Picroside III, in crude herbal extracts from Picrorhiza scrophulariiflora (P. scrophulariiflora).|