|Source:||The resins of Xanthorrhoea hastilis R. BR.|
|Biological Activity or Inhibitors:||1. 4,2'-Dihydroxy-4'-methoxychalcone shows allergy-preventive effects.
|Solvent:||Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, 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: firstname.lastname@example.org
|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||3.6999 mL||18.4993 mL||36.9987 mL||73.9973 mL||92.4967 mL|
|5 mM||0.74 mL||3.6999 mL||7.3997 mL||14.7995 mL||18.4993 mL|
|10 mM||0.37 mL||1.8499 mL||3.6999 mL||7.3997 mL||9.2497 mL|
|50 mM||0.074 mL||0.37 mL||0.74 mL||1.4799 mL||1.8499 mL|
|100 mM||0.037 mL||0.185 mL||0.37 mL||0.74 mL||0.925 mL|
Chem Pharm Bull (Tokyo). 2007 Apr;55(4):675-8.
|Allergy-preventive flavonoids from Xanthorrhoea hastilis.[Pubmed: 17409571]|
|Allergy-preventive activity was demonstrated for an extract of resins from Xanthorrhoea hastilis R. BR. in a search for allergy-preventive substances from natural sources. By bioassay-directed fractionation of this plant extract, a new flavanone, 3',5'-dihydroxy-7,4'-dimethoxyflavanone (1), and two new chalcones, 3,5,2'-trihydroxy-4,4'-dimethoxychalcone (2) and 5,2'-dihydroxy-3,4,4'-trimethoxychalcone (3), were isolated together with five known compounds, 5'-hydroxy-7,3',4'-trimethoxyflavanone (4), 3'-hydroxy-7,4'-dimethoxyflavanone (5), liquiritigenin 7-methyl ether (6), 4,2'-Dihydroxy-4'-methoxychalcone (7) and sakuranetin (8). The structures of 1, 2 and 3 were elucidated by spectroscopic methods. All of these compounds showed allergy-preventive effects.|