|Source:||The herbs of Crepis crocea.|
|Biological Activity or Inhibitors:|
|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||1.6989 mL||8.4947 mL||16.9895 mL||33.9789 mL||42.4737 mL|
|5 mM||0.3398 mL||1.6989 mL||3.3979 mL||6.7958 mL||8.4947 mL|
|10 mM||0.1699 mL||0.8495 mL||1.6989 mL||3.3979 mL||4.2474 mL|
|50 mM||0.034 mL||0.1699 mL||0.3398 mL||0.6796 mL||0.8495 mL|
|100 mM||0.017 mL||0.0849 mL||0.1699 mL||0.3398 mL||0.4247 mL|
Zhongguo Zhong Yao Za Zhi. 2015 Oct;40(19):3800-4.
|Chemical constituents from Crepis crocea.[Pubmed: 26975105]|
|Thirteen compounds were isolated from the ethyl acetate fraction of Crepis crocea by column chromatographies on silica gel, Sephadex LH-20 and semi-preparative HPLC. The structures were elucidated on the basis of spectral analysis as tectorone I (1), 8β- (2-methyl- 2-hydroxy-3-oxobutanoyloxy) -glucozaluzanin C (2), Tectoroside (3), luteolin-7-O-glucoside (4), cosmosiin (5), esculetin (6), 3,4-dihydroxybenzaldehyde (7), trans-4-hydroxycinnamic acid (8), Caffeic acid (9), methyl p-hydroxyphenyllactate (10), ethylp- hydroxyphenyllactate (11), cis-3,4-dihydroxy-β-ionion (12). All the compounds, except for compounds 4 and 9, were isolated from this plant for the first time, and tectorone I (1) is a new natural product.|