Uzarin

Uzarin
Product Name Uzarin
CAS No.: 20231-81-6
Catalog No.: CFN70301
Molecular Formula: C35H54O14
Molecular Weight: 698.8 g/mol
Purity: >=98%
Type of Compound: Steroids
Physical Desc.: Powder
Source: The herbs of Nerium oleander
Solvent: DMSO, Pyridine, Methanol, Ethanol, etc.
Price:
Reference standards.
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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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    International Journal of Clinical Pharmacology & Therapeutics, 2012, 50(10):729-740.
    Cardiovascular effects, pharmacokinetics and cross-reactivity in digitalis glycoside immunoassays of an antidiarrheal uzara root extract.[Reference: WebLink]
    Uzara glycosides (UG) extracted from Xysmalobium undulatum are used for treating non-specific diarrhea.Cross-reactivity has been described for UG in digitalis glycoside assays but digitalis-like cardiac effects are controversially discussed.
    METHODS AND RESULTS:
    Therefore, we performed a randomized, singleblind cross-over study in 18 healthy volunteers receiving a commercially available Uzara product (Uzara® Lösung N, Stada AG, Bad Vilbel, Germany (ULN)), digoxin (1 mg, i.v., positive control) and placebo in double-dummy technique. Pharmacodynamic effects were quantified by means of ECG and impedance cardiography (ICG). After oral administration of ULN, main metabolites were determined using HPLC-MS/MS and digitalis-like serum levels (DLSL) were measured in two digitoxin and digoxin assays, respectively. In comparison to placebo, ULN did not change significantly any PD parameters whereas digoxin altered significantly area under the effect curve of several ECG and ICG parameters, respectively. Since some serum levels of three ULN ingredients (Uzarin, uzarigenin and xysmalorin) were below LLQ, PK analyses could only be performed for allouzarigenin and revealed a marked inter-individual variability. Therefore, median values (min; max) were calculated as follows: Cmax = 0.39 (0.15; 1.81) ng/ml, tmax = 7.0 (3.0; 36.0) h, T1/2 = 5.2 (0.8; 23.6) h, AUC0-36h = 4.2 (0.8; 11.1) ng/ml×h, AUC0-∞ = 5.8 (1.8; 13.1) ng/ml×h. DLSL reached Cmax of 28 ng/ml and 1,980 ng/ml for digoxin and digitoxin, respectively.
    CONCLUSIONS:
    We could not observe significant cardiovascular pharmacodynamic effects after oral administration of the recommended single dose of Uzara extract to healthy volunteers. However, considerable DLSL could be detected, proving cross-reactivity of uzara components with the conventional digitalis assays used. However, none of the metabolites we had suspected to be the cause for the crossreactivity could be identified in reasonable quantities.
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