Catharanthine Sulfate | CAS:70674-90-7

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.

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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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A Convenient Approach to Simultaneous Analysis of a Pharmaceutical Drug and Its Counter-Ion by CE Using Dual-Opposite End Injection and Contactless Conductivity Detection[Reference: WebLink]

Capillary electrophoresis (CE) coupled to a capacitively coupled contactless conductivity detector (C4D) was used for the determination in a single analysis of a pharmaceutical drug and its counter-ion.
METHODS AND RESULTS:
Dual-opposite end injection (DOI) was used to introduce hydrodynamically the analytes at each end of the capillary. No modification of the commercial apparatus is required. After applying the voltage, the cations and anions migrate from each end of the capillary in opposite directions toward the detector placed near the cathode outlet. The electrophoretic conditions were initially developed with three test drugs (chlorpheniramine maleate, metoprolol tartrate, clomiphene citrate) and then applied to two Vinca alkaloids (Catharanthine Sulfate, vinorelbine ditartrate). The 10 mM histidine–50 mM acetic acid buffer (pH 4.1)–methanol 90:10 (v/v) electrolyte was suitable for the analysis of these high or medium mobile anions by CE–C4D due to its low conductivity background and high buffer capacity. Finally, the CE procedure developed was successfully validated for Catharanthine Sulfate.
CONCLUSIONS:
The method developed herein is fast (<10 min) and accurate (repeatability on migration time < 0.6% and peak areas < 1.3%, n = 6).

Product Name	Catharanthine Sulfate
CAS No.:	70674-90-7
Catalog No.:	CFN93298
Molecular Formula:	C₂₁H₂₆N₂O₆S
Molecular Weight:	434.51 g/mol
Purity:	>=98%
Type of Compound:	Alkaloids
Physical Desc.:	Powder
Source:	The herbs of Catharanthus roseus (L.) G.Don
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
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